Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：Japanese   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：Japanese   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English  

Yutaka Chaen, Kazuhiro Tanabe, Haisong Jiang, and Kiichi Hamamoto, “Low Wavelength Dependency Design for MMI (Multi-Mode Interference) Mode Converter,” IEICE Electronics Express (ELEX), Vol.12, No. 20, 20150727, Oct. 2015

Language：English  

Kiichi Hamamoto and Haisong Jiang, “Active-MMI devices: concept, proof, and recent progress”, Journal of Physics D: Applied Physics, Vol. 48, No. 38, 383001, Sep. 2015

Language：English  

Hirohito Hokazono, Wenying Li, Syota Enami, Haisong Jiang, and Kiichi Hamamoto, “Gas sensing demonstration by using silica high-mesa waveguide with amplified cavity ring down spectroscopy technique,” IEICE Electronics Express (ELEX), Vol.12, No.15, 20

Language：English  

Ryuta Takakura, Makoto Jizodo, Asuka Fujino, Tatsushi Tanaka, and Kiichi Hamamoto, “Proposal of Optical Mode Switch”, Japanese Journal of Applied Physics, Vol. 53, 08MB10, July 2014

Language：English  

Mohammad Nasir Uddin, Takaaki Kizu, Yasuhiro Hinokuma, Kazuhiro Tanabe, Akio Tajima, Kazutoshi Kato, and Kiichi Hamamoto, “Split pump region in 1.55m InGaAsP/InP asymmetric active multi-mode interferometer laser diode for improved modulation bandwidth,” IEICE Transactions on Electronics, Vol. E97-C, No. 7, pp. 781-786, July 2014

Language：English  

Mohammad Nasir Uddin, Takaaki Kizu, Yasuhiro Hinokuma, Bingzhou Hong, Akio Tajima, Kazutoshi Kato, and Kiichi Hamamoto, “High intrinsic modulation bandwidth InGaAsP/InGaAsP 1.55μm asymmetric active multimode interferometer laser diode by using split pump configuration,” Japanese Journal of Applied Physics, Vol. 53, 08MB09, July 2014

Language：English  

Language：English  

Language：English   Publishing type：Research paper (scientific journal)  

Yasuhiro Hinokuma, Yutaka Chaen, Haisong Jiang, Takuma Hagio, Seiki Nakamura, Akio Tajima, and Kiichi Hamamoto, “Single Wavelength Emission by Using Novel Asymmetric Configuration for Active Multi-mode interferometer Laser Diodes”, IEICE Electronics Express (ELEX), Vol. 9, No. 18, pp. 1448-1453, Sep. 2012

Language：English   Publishing type：Research paper (scientific journal)  

Daisuke Nakashima and Kiichi Hamamoto, “Proposal of Novel Strip High-Mesa Waveguide for Infrared Absorption Sensing”, Applied Physics Express (APEX), Vol. 5, pp. 062202-1 - 062202-3, Jun. 2012

Language：English   Publishing type：Research paper (scientific journal)  

Zhigang Zang*, Keisuke Mukai*, Paolo Navaretti**, Marcus Duelk**, Christian Velez**, and Kiichi Hamamoto*, “Thermal Resistance Reduction in High Power Superluminescent Diodes by Using Active Multi-Mode Interferometer”, Applied Physics Letters, Vol. 100, No. 31, pp. 10801-10804, Jan. 2012
*Kyushu University ** EXALOS AG

Language：English   Publishing type：Research paper (scientific journal)  

Haisong Jiang*, Yutaka Chaen*, Takuma Hagio*, Kazuisao Tsuruda*, Makoto Jizodo*, Shinji Matsuo**, Jing Xu***, Christophe Peucheret***, and Kiichi Hamamoto*, “All Optical Fillip-Flop Operation Based on Asymmetric Active-Multimode Interferometer Bi-stable Laser Diodes”, Optics Express, Vol. 19, No. 26, pp. B119-B124, Nov. 2011

Language：English   Publishing type：Research paper (scientific journal)  

(Haisong Jiang*, Hany Ayad Bastawrous*, Takuma Hagio*, Shinji Matsuo**, and Kiichi Hamamoto*, “Low Hysteresis Threshold Current (39mA) Active Multi-Mode-Interferometer (MMI) Bi-stable Laser Diodes Using　Lateral-Modes Bi-stability”, IEEE Journal of Selected Topics in Quantum Electronics, Vol. 17, No. 5, pp. 1258-1263, Sep. 2011
*Kyushu University ** NTT Photonics Laboratories

Language：English   Publishing type：Research paper (scientific journal)  

Takaaki Kakitsuka* **, Shinji Matsuo**, Kiichi Hamamoto*, Toru Segawa**, Hiroyuki Suzuki**, and Ryo Takahashi**, “Injection-Locked Flip-Flop Operation of a DBR Laser”, IEEE Photonics Technology Letters, Vol. 23, No. 17, pp. 1261-1263, Sep. 2011
*Kyushu University ** NTT Photonics Laboratories

Language：English   Publishing type：Research paper (scientific journal)  

Zhigang Zang*, Keisuke Mukai*, Paolo Navaretti**, Marcus Duelk**, Christian Velez**, and Kiichi Hamamoto, “High Power and Stable High Coupling Efficiency (66%) Superluminescent Light Emitting Diodes by using Active Multi-mode Interferometer”, IEICE Transactions on Electronics, Vol. E94-C, No. 5, pp. 862-864, May 2011
*Kyushu Universtiy **EXALOS AG

Language：English   Publishing type：Research paper (scientific journal)  

Zhigang Zang*, Takahiro Minato*, Paolo Navaretti**, Yasuhiro Hinokuma*, Marcus Duelk**, Christian Velez**, and Kiichi Hamamoto*, “High power(>110mW) superluminescent diodes using active multi-mode interferometer”, IEEE Photonics Technology Letters, Vol. 22, No. 10, pp. 721-723, May 2010
*Kyushu Universtiy **EXALOS AG

Language：English  

Zhigang Zang*, Takahiro Minato*, Paolo Navaretti**, Yasuhiro Hinokuma*, Marcus Duelk**, Christian Velez**, and Kiichi Hamamoto*, “High power(>110mW) superluminescent diodes using active multi-mode interferometer”, IEEE Photonics Technology Letters, Vol. 22, No. 10, pp. 721-723, May 2010
*Kyushu Universtiy **EXALOS AG

Language：English   Publishing type：Research paper (scientific journal)  

Haisong Jiang, Hany Ayad Bastawrous, Hirotaka Saikaku, Yuichiro Tahara, Shinji Matsuo and Kiichi Hamamoto, “Optical Bit-Memory Element Based on Bi-Stability between Different Lateral Modes Using Novel Active Multi-Mode-Interferometer (MMI) for Random Access Memory (RAM) Application”, Engineering Science Reports, Kyushu University, Vol. 31, No.1, pp. 1-6,　June 2009

Language：English  

Teppei Fukuda, Kazunori Okamoto, Yasuhiro Hinokuma, and Kiichi Hamamoto, “Phase-locked array laser diodes (LDs) by using 1xN active multi-mode-interferometer (MMI)”, IEEE Photonics Technology Letters, Volume 21, Issue 3, pp. 176-178, February 2009

Language：English   Publishing type：Research paper (scientific journal)  

Yasunari Matsunaga*, Kosuke Kameyama*, Hiroyuki Wado**, Yasuyuki Takeuchi**, and Kiichi Hamamoto*, “SOI-based Si/SiO2 high-mesa waveguides for a compact infrared sensing system”, Engineering Science Reports, Kyushu University, Vol. 30, No1, pp. 1-7, June 2008

Language：English   Publishing type：Research paper (scientific journal)  

Language：Japanese   Publishing type：Research paper (scientific journal)  

Kiichi Hamamoto, "Recent Progress of Opto-Electronic Devices by Using Multi-Mode Interference (MMI)", The IEICE Transacctions on Electronics, Vol. J89-C, No.6, pp. 365-371, June 2006

Language：English   Publishing type：Research paper (scientific journal)  

First demonstration of novel active multi-mode interferometer (MMI) LDs integrated with 1st order-mode permitted waveguides

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publisher：International Exchange and Innovation Conference on Engineering & Sciences  

We have researched photonic integrated circuits incorporating nano-pixel waveguides by designing machinelearning, that enabled the realization of previously challenging functions with several micrometer footprints. This presentation will discuss our design methodology and the recent progress.

DOI： 10.5109/7323429

CiNii Research

Language：English   Publisher：International Exchange and Innovation Conference on Engineering & Sciences  

In the context of an aging global population, breath analysis offers a non-invasive method to assess health. One approach uses Cavity Ring-Down Spectroscopy (CRDS), where an optical amplifier compensates for feedback loop loss. However, the self-lasing phenomenon (arising when coherency is secured at a wavelength other than the sensing light) reduces device sensitivity. To mitigate this, a polarization rotator is introduced in the ring cavity, ensuring amplification benefits only the sensing light. As we develop an integrable CRDS system on a Silicon-On-Insulator (SOI) platform, we demonstrate that a 90° polarization rotation is crucial. SOI nanopixel waveguides with two converters and air holes can achieve an 86° to 94° rotation over a 20-nm wavelength range, with insertion loss manageable by the EDFA. A hole diameter of 70 nm offers a balance between reduced loss and efficient mode conversion, though larger holes may enhance mode confinement, particularly for TE10 and TM00 modes.

DOI： 10.5109/7323413

CiNii Research

Publisher：Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers  

In response to the global aging population, a photonic-integrated-circuit sensor is investigated for the detection of disease markers within human breath content. The device relies on cavity-ring-down spectroscopy with an amplifying medium and loop feedback to secure sufficient sensitivity down to ppm-order concentration detection. This configuration, however, might cause unwanted oscillation, and the polarization rotation method has been proposed to prevent this issue. We have researched a waveguide-based polarization rotator using nano-pixels. The device consists of two regions: (1) From TE00 mode TE10 modes conversion and (2) TE10 to TM00 modes conversion. As the intermediary TE10 mode quality is key to realizing polarization rotation performance, the purpose of this study is to realize high-quality TE10 by employing the mean-squared-error criterion for waveguide design optimization. A finite-difference time-domain simulation with this method reveals a TE10 mode with 1% accuracy that results in a polarization extinction ratio improved from 4.3 to 8.6 dB.

DOI： 10.35848/1347-4065/ad5299

Web of Science

Scopus

Publisher：Japanese Journal of Applied Physics  

The power splitter is one of the fundamental elements in a photonic IC. Among various power splitter structures, nano-pixel-based ones have attracted attention in recent years because of their flexible design capability. As there is no rigid design rule in nano-pixel layout, typically, inverse design algorithms are employed to realize the target function. In inverse design, general criteria are needed during the design process, and one typical criterion is the excess loss, however, there are no specific criteria for mode field evaluation. When designing a 1 × N power splitter, considering the power balance among the N output ports is crucial, therefore, we propose a correlation coefficient method to evaluate the output electric field profile. In this study, we adopted vector criteria including both an excess loss and correlation coefficient method during the inverse design process. As a result, the simulated results show all four 0th order modes and the output power to be 24.490%, 24.494%, 24.494%, and 24.490% with a low excess loss of 0.1 dB.

DOI： 10.35848/1347-4065/ad50e5

Web of Science

Scopus

Publisher：IEEE Journal of Quantum Electronics  

This Special Issue is associated with the European Conference on Integrated Optics (ECIO), held on May 4-6, 2022, in Milan, Italy. This conference was the 23rd in a series that started in London in 1981. After the virtual edition of 2020 and the cancellation of the 2021 edition due to the COVID-19 pandemic emergency, the 2022 ECIO conference was hosted fully in presence by Politecnico di Milano and was attended by about 250 participants. The scientific sessions of the conference were opened by two plenary speakers, Prof. Volker Sorger of George Washington University, USA, and Prof. Paul Prucnal of Princeton University, USA, who presented recent developments on integrated photonics for machine learning, high-performance computing, and neural networks.

DOI： 10.1109/JQE.2023.3276213

Web of Science

Scopus

Publisher：28th Microoptics Conference, MOC 2023  

Integration available polarization rotator has been proposed using nano-pixel waveguide. 4.2x0.96um2 region exhibits a polarization extinction ratio of 4.6 dB with excess loss of 5.1 dB in simulation.

DOI： 10.23919/MOC58607.2023.10302739

Scopus

Publisher：2023 Opto-Electronics and Communications Conference, OECC 2023  

Multimode demultiplexer is proposed by using nano-pixel configuration in a square of 3.0 × 3.0 μm2. The simulated results demonstrate mode XT of 13.6 dB and 11.4 dB for 0th and 1st order modes, respectively.

DOI： 10.1109/OECC56963.2023.10209986

Scopus

Publisher：28th Microoptics Conference, MOC 2023  

We observe slow light effect in nano-pixel waveguide for the first time as to our knowledge. The achieved slow light effect is with a group index NG of 8.73 in 1546 nm to 1553 nm wavelength range.

DOI： 10.23919/MOC58607.2023.10302870

Scopus

Publisher：28th Microoptics Conference, MOC 2023  

Vertical field enhancement is demonstrated using nano-pixel waveguide. As a result, relatively rectangular far-field-pattern are successfully obtained.

DOI： 10.23919/MOC58607.2023.10302935

Scopus

Publisher：28th Microoptics Conference, MOC 2023  

Nano-pixel based 90 ° bending waveguide is demonstrated toward 100% reflecting in a device cavity. 90 ° angle output was successfully confirmed with excess loss of 7 dB at 1550 nm.

DOI： 10.23919/MOC58607.2023.10302893

Scopus

Publisher：28th Microoptics Conference, MOC 2023  

We verify the signal modulation possibility of active-MMI laser diode on simulation. The modulation bandwidth is extended over 90 GHz which enables over 100 bps modulation.

DOI： 10.23919/MOC58607.2023.10302836

Scopus

Publisher：28th Microoptics Conference, MOC 2023  

1 \times 4 nano-pixel power splitter is designed using field profile criteria. The finalized power splitter shows all four 0th order modes, low excess loss of 0.1 dB, and low power deviation of 0.004% among all 4 ports.

DOI： 10.23919/MOC58607.2023.10302858

Scopus

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japanese Journal of Applied Physics  

A 3D waveguide is attractive because it has the potential that the waveguides are arranged, not only in plane, into three-dimension. The mosquito method, in which the core and cladding material sources are liquid and will be cured using UV light, is known as one of the ways to fabricate the 3D waveguide. In this method, if multiple waveguides are fabricated, the time until UV cure is different between the first waveguide and the last one and it leads to core position shift because of gravity. To solve the problem, we considered reducing the time from the first waveguide formation to the UV cure using automatic waveguide fabrication with a camera. For the automatic waveguide fabrication, YOLO (you look only once) and OpenCV are exploited as machine learning and an image processor, respectively. As a result, a waveguide recognition time of 10 ms and image processing time of 50 ms, totally 60 ms, are realized.

DOI： 10.35848/1347-4065/ac6e57

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japanese Journal of Applied Physics  

Spatial-division-multiplexing, as a promising way to enhance the fiber transmission capacity of optical networks, has been widely researched, and still suffers from the problem of device size increasing along with the space-mode order increasing. In order to solve this problem, an optical mode field compression method is needed, however, it is difficult to realize for traditional optical waveguide. To achieve a highly dense photonic integrated circuit for the transmission of higher order space-mode, a space-mode compressor using nano-pixel structure was proposed and investigated in this work. A supervised machine learning model using a deep neural network was used to design and optimize the space-mode compressor based on nano-pixel structure. As a simulated result, we achieved possible nano-pixel configurations for the purpose of mode-compression and there is a more than 50% size compression for the 0th and 1st order modes, as well as a 39.3% size compression for the 2nd and 35% for 3rd order modes.

DOI： 10.35848/1347-4065/ac7b0e

Web of Science

Scopus

Web of Science

PubMed

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japanese Journal of Applied Physics  

A multi-mode interference (MMI) waveguide has been widely researched and developed to realize an optical power coupler. MMI coupler exhibits the superior performance of the "Equal intensity coupling"characteristics, however, it has a problem that excess loss occurs if the phase-matching condition is not satisfied at all of the input ports. The phase condition depends on the number of input ports, and relatively complicated phase control is required, thus, it is desired to realize an optical power coupler without complicated phase adjustment. In order to avoid the phase-control difficulty, a nano-pixel power coupler is investigated in this paper. The nano-pixel-based coupler has the merit of ultra-compact dimension which is close to the wavelength order, therefore, it is expected that less excess loss even under simple "equal"phase conditions. The structure was examined using FDTD and the simulated results show equal input (intensity and phase) coupling capabilities with a low excess loss of 0.11 dB.

DOI： 10.35848/1347-4065/ac678d

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japanese Journal of Applied Physics  

A semiconductor optical amplifier (SOA) is wildly used as gain media in a photonic integrated circuit, as it is integrable with various devices, including wavelength filter, on the same wafer. Quantum dots (QD) have been known to realize high-temperature operation without using a thermo-cooler, the saturated output power was not high due to the limited density of state in QD. To realize high saturated output power under high temperatures, we have exploited the active multi-mode interferometer (active-MMI) configuration on QD SOA. We fabricated active-MMI SOA using a 1.31 μm InAs/GaAs QD active layer with the design of approximately 5 times larger footprint compared to a single stripe, whereas it holds regular single transverse mode output. As a result, a significant improvement of 15 dB saturated output power at 75 °C was substantiated successfully.

DOI： 10.35848/1347-4065/ac6a3e

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

DOI： https://doi.org/10.1364/OSAC.412933

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

光導波路ガスセンサの性能向上を目的として光アンプを適用した実験および解析結果。

Language：Japanese   Publishing type：Research paper (scientific journal)  

DOI： 10.1364/AO.391604

Language：English   Publishing type：Research paper (scientific journal)  

We have proposed and demonstrated a mode selective active-MMI (multimode interferometer) laser diode as a mode selective light source so far. This laser diode features; 1) lasing at a selected space mode, and 2) high modulation bandwidth. Based on these, it is expected to enable high speed interconnection into future personal and mobile devices. In this paper, we explain the mode selection, and the high speed modulation principles. Then, we present our recent results concerning high speed frequency response of the fundamental and first order space modes.

DOI： 10.1587/transele.2018ODI0003

Language：English   Publishing type：Research paper (scientific journal)  

The sol-gel method is a well-known process for SiO₂ formation on top of a semiconductor-based waveguide. This method does not require expensive equipment or SiH₄ gas. However, it may result in difficulty with wet-etching, which prevents proper current injection into the semiconductor layer. We have investigated the surface condition of sol-gel SiO₂ on top of Si, and have confirmed that the main causes of the anti-etching property might be due to the formation of a polymer layer after the curing process. To improve the surface condition, plasma ashing, in addition to 700 °C curing, is proposed. Regular wet etching of SiO₂ layer on Si with a ratio of 1800 nm min^-1 has been successfully confirmed.

DOI： 10.7567/1347-4065/ab27b2

Language：English   Publishing type：Research paper (scientific journal)  

A high-speed mode selective light source with over 40 GHz direct modulation bandwidth on both 0th and 1st order modes was demonstrated on an active multimode interferometer laser diode (active-MMI LD). By introducing multiple photon-photon resonances (PPR), the bandwidth of small signal frequency response is extremely extended. As the advantage of the active-MMI, the designed PPR frequencies are stable and do not change as the cleaving condition changes. In this work, 1 × 3 asymmetric active-MMI LD was fabricated to introduce multiple PPRs. Over 40 GHz direct modulation bandwidth has been confirmed experimentally on both 0th and 1st order modes.

DOI： 10.7567/1347-4065/ab1fd7

Language：English   Publishing type：Research paper (scientific journal)  

A cavity-ring-down spectroscopy (CRDS) system utilizing waveguide for breath sensing realizes several meter optical path integration that has possibility for ppm-order gas sensing within a compact area. We have proposed an optical amplifier assisted gas sensing system scheme to compensate waveguide propagation loss that may prevent ppm-order gas detection. The amplifier in a CRDS system, however, may result in self-lasing at specific wavelength in case of high pumping condition. Once self-lasing happens, signal light loose its gain from amplifier. The amplifier spontaneous emission that generated by an erbium-doped fiber amplifier affects the background noise level of cavity ring-down waveforms. In this work, we propose the scheme of polarization direction control so as to suspend the self-lasing, and the scheme of additional loss as to suppress ASE power. As a result, we confirmed the suppression of light intensity at a self-lasing wavelength below -50 dBm and the gain improvement of 24 dB at signal.

DOI： 10.7567/1347-4065/ab1e3d

Language：English   Publishing type：Research paper (scientific journal)  

One-dimensional photonic crystal (1D PhC) cavities are used as ultrasensitive gas sensors due to their high sensitivity to changes in the surrounding environment. One of the issues for typical 1D PhC-based sensors is that the confined optical field does not fully overlap with analytes, which therefore leads to low sensitivity. Herein, we propose and numerically investigate a photonic crystal cavity by introducing a two tangent air hole array to improve the gas refractive index sensitivity. We also investigate the spectral feature of the proposed photonic crystal cavity for varying structure parameters and methane gas concentration. In addition, the coupling efficiency of the waveguide and the influence of the temperature on the proposed structure for sensing applications are analyzed. Theoretical analysis reveals that the proposed two tangent hole structure simultaneously achieves a high sensitivity (353 nm/RIU) and figure of merit (FOM = 1.2 × 10⁴) compared to those observed in previous studies.

DOI： 10.7567/1347-4065/ab26ab

Event date： 2023.9

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

He Xiao, Yudai Kawano, Haisong Jiang, and Kiichi Hamamoto, “100 Gbps Direct Modulation Scheme by Utilizing Active-MMI Laser,” Technical digest of 28th Micro Optics Conference (MOC2023), PO-6, pp. 47-48, 26th Sep. 2023

Event date： 2023.9

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Ryoma Matsuo, Haisong Jiang, Younjin Kim, and Kiichi Hamamoto, “Experimental Demonstration of Vertical Field Tuning using Nano-Pixel Spot-Size Converter,” Technical digest of 28th Micro Optics Conference (MOC2023), PO-42, pp. 117-118, 26th Sep. 2023

Event date： 2023.9

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Yuzhuang Xie, Haisong Jiang, and Kiichi Hamamoto, “1 × 4 Nano-pixel Power Splitter Designed using Overlap-integral Method,” Technical digest of 28th Micro Optics Conference (MOC2023), PO-62, pp. 155-156, 26th Sep. 2023

Event date： 2023.9

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Sara Bruhier, Haisong Jiang, and Kiichi Hamamoto, “Nano-pixel Polarization Rotator for Photonic Integrated Breath Sensor,” Technical digest of 28th Micro Optics Conference (MOC2023), PO-64, pp. 159-160, 26th Sep. 2023

Event date： 2023.9

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2023.9

Language：Japanese   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2023.9

Language：Japanese   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2023.7

Language：English   Presentation type：Oral presentation (general)  

Country：China  

Cangui Tang, Haisong Jiang, and Kiichi Hamamoto, “Mode-demultiplexer by using nano-pixel,” Technical digest of　28th Optoelectronics Communication Conference (OECC2023), OECC2023-0315-30315-3, 4th Jul. 2023

Event date： 2023.4

Language：English   Presentation type：Oral presentation (general)  

Country：Netherlands  

Haisong Jiang, Cangui Tang, and Kiichi Hamamoto, “Optical Isolator Element Using Nano-pixel for Photonic Integrated Circuits,” Proceeding of 24th European Conference on Integrated Optics (ECIO2023), ID 158, pp. 189-191, 20th Apr. 2023

Event date： 2023.4

Language：English   Presentation type：Oral presentation (general)  

Country：Netherlands  

Yuta Shimamura, Haisong Jiang, Kensei Yamauchi, Ryota Kuwahata, Ryoma Matsuo, and Kiichi Hamamoto, “Demonstration of Nano-pixel 9:1 Asymmetric Power Splitter,” Proceeding of 24th European Conference on Integrated Optics (ECIO2023), Th2.3, pp. 51-53, 20th Apr. 2023

Event date： 2023.4

Language：English   Presentation type：Oral presentation (general)  

Country：Netherlands  

Haisong Jiang, Cangui Tang, and Kiichi Hamamoto, “Optical Isolator Element Using Nano-pixel for Photonic Integrated Circuits,” Proceeding of 24th European Conference on Integrated Optics (ECIO2023), ID 158, pp. 189-191, 20th Apr. 2023

Event date： 2023.3

Language：Japanese   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2023.3

Language：Japanese   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2023.3

Language：Japanese   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2023.3

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

He Xiao, Keiichiro Koudu, Yudai Kawano, Haisong Jiang, and Kiichi Hamamoto“Photon-Photon-Resonance (PPR) control scheme by using active-MMI configuration,” IEICE General Conference 2023, Vol. 1, C-3/4-56, pp. 160, 10th Mar. 2023

Event date： 2023.3

Language：Japanese   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2023.3

Language：Japanese   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2022.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：松山   Country：Japan  

Event date： 2022.10

Language：English   Presentation type：Oral presentation (general)  

Venue：松山   Country：Japan  

Event date： 2022.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：松山   Country：Japan  

Event date： 2022.9

Language：English   Presentation type：Oral presentation (general)  

Venue：On-line   Country：Germany  

Event date： 2022.9

Language：English   Presentation type：Oral presentation (general)  

Venue：On-line   Country：Germany  

Event date： 2022.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：On-line   Country：Japan  

Event date： 2022.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：On-line   Country：Japan  

Event date： 2022.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：On-line   Country：Japan  

Event date： 2022.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：On-line   Country：Japan  

Event date： 2022.3

Language：English   Presentation type：Oral presentation (general)  

Venue：On-line   Country：Japan  

Event date： 2021.11

Language：English   Presentation type：Oral presentation (general)  

Venue：On-line   Country：Japan  

Yunjie Wang, Haisong Jiang, and Kiichi Hamamoto,, Proceedings of The International Symposium on Extremely Advanced Transmission Technology ((EXAT 2021), P-18, 4th Nov. 2021

Event date： 2021.11

Language：English   Presentation type：Oral presentation (general)  

Venue：On-line   Country：Japan  

Shun Matsubara, Tomoya Zennouji, Haisong Jiang and Kiichi Hamamoto, “Rapid waveguide recognition toward MCF/optical-mode-switch 3D direct coupling,” Proceedings of The International Symposium on Extremely Advanced Transmission Technology (EXAT 2021), P-13, 4th Nov. 2021

Event date： 2021.10

Language：English   Presentation type：Oral presentation (general)  

Venue：Hybrid   Country：Germany  

Zhiyuan Fan, Yasuhiro Hinokuma, Haisong Jiang and Kiichi Hamamoto, “ASE spectrum analysis on active-MMI SOA toward high saturation output power at high temperature,” Proc. 27th IEEE International Semiconductor Laser Conference (ISLC), WP1.17, pp. 76-77, 13th Oct. 2021

Event date： 2021.9

Language：English   Presentation type：Oral presentation (general)  

Venue：Hybrid   Country：Japan  

Shun Matsubara, Tomoya Zennouji, Haisong Jiang and Kiichi Hamamoto, “Rapid automatic waveguide recognition using YOLO for 3D waveguide drawing,” Tech. Dig. MOC2021, PD-2, pp. 280-281, 29th Sep. 2021

Other Link： http://moc2022.com/

Event date： 2021.9

Language：English   Presentation type：Oral presentation (general)  

Venue：Hybrid   Country：Japan  

Zhiyuan Fan, Yasuhiro Hinokuma, Haisong Jiang and Kiichi Hamamoto, “Active-MMI SOA on quantum-dots toward high saturation output power under high temperature,” Tech. Dig. MOC2021, F-3, pp. 76-77, 28th Sep. 2021

Other Link： http://moc2022.com/

Event date： 2021.9

Language：English   Presentation type：Oral presentation (general)  

Venue：Hybrid   Country：Japan  

Keiichiro Shoda, Xiao He, Keiichiro Kozu, Haisong Jiang and Kiichi Hamamoto, “Demonstration of equal input (intensity and phase) MMI like power coupler by using nano-pixel structure,” Tech. Dig. MOC, PO-41, pp. 224-225, 28th Sep. 2021

Other Link： http://moc2022.com/

Event date： 2021.9

Language：English   Presentation type：Oral presentation (general)  

Venue：Hybrid   Country：Japan  

Yunjie Wang, Haisong Jiang, and Kiichi Hamamoto, “Proposal of space-mode “compressor” by using nano-pixel,” Tech. Dig. MOC, PO-61, pp. 264-265, 28th Sep. 2021

Other Link： http://moc2022.com/

Event date： 2021.9

Language：English   Presentation type：Oral presentation (general)  

Venue：Hybrid   Country：Japan  

He Xiao, Keiichiro Shoda, Keiichiro Koudu, Haisong Jiang, and Kiichi Hamamoto, “Affection analysis of frequency response with photon-photon-resonance (PPR) to directly modulated 40 Gbps signal,” Tech. Dig. MOC2021, PO-65, pp. 272-273, 28th Sep. 2021

Other Link： http://moc2022.com/

Event date： 2020.6

Language：English   Presentation type：Oral presentation (general)  

Venue：on-line   Country：United States  

光導波路ガスセンサの性能向上を目的として光アンプを適用した実験および解析結果。

Event date： 2019.11

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Shingo murakami, Bingzhou Hong, Haisong Jiang and Kiichi Hamamoto, “Observation of 60 GHz and 20 GHz Multiple Photon-Photon Resonances Using Active Multimode Interferometer Laser Diodes,” Tech. Dig. MOC, G4, pp. 304-305, 20th Nov. 2019

Other Link： http://moc2019.com/

Event date： 2019.11

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Ryota Kuwahata, Haisong Jiang and Kiichi Hamamoto, “Fundamental Study of Saturation Output Power on Quantum Dot Semiconductor Optical Amplifier (SOA) under High Temperature (85 oC),” Tech. Dig. MOC, P42, pp. 180-181, 18th Nov. 2019

Other Link： http://moc2019.com/

Event date： 2019.6

Language：English   Presentation type：Oral presentation (general)  

Venue：Napa, CA   Country：United States  

Kiichi Hamamoto, “Active-MMI laser diodes and optical mode switches - Toward high speed interconnection and flexible mode-division multiplexing network -,” Technical Digest of 9th International Symposium on Ultrafast Photonic Technologies (ISUPT) and the Special Symposium on Silicon Photonics of the Future (SSPhF), MW15-6, 17th June 2019

Event date： 2019.5

Language：English   Presentation type：Oral presentation (general)  

Venue：Ise   Country：Japan  

Mahmoud Nasef, Fujimoto Kantaro, Haisong Jiang, and Kiichi Hamamoto, “Propagation Mode Retention Using Strongly Coupled Multi-Core Fiber,” Proceedings of The International Symposium on Extremely Advanced Transmission Technology (EXAT 2019, Ise, Japan), P15, 30th May 2019

Event date： 2019.5

Language：English  

Venue：Ise   Country：Japan  

Haisong Jiang, Mahmoud Nasef, Fujimoto Kantaro, and Kiichi Hamamoto, “Spatial Single Dimensional Mode De-multiplexer Based on Rowland Circle Waveguide,” Proceedings of The International Symposium on Extremely Advanced Transmission Technology (EXAT 2019, Ise, Japan), P17, 30th May 2019

Event date： 2018.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：佐賀   Country：Japan  

Event date： 2018.10

Language：English   Presentation type：Oral presentation (general)  

Venue：佐賀   Country：Japan  

Yu Han、Wenying Li、Haisong Jiang、Kiichi Hamamoto, “Thin Core (100nm) Silicon High-mesa Waveguide for High Quality Breath Sensors,” 電子情報通信学会技術研究報告（佐賀県教育会館、佐賀）, Vol. 118, No. 253, LQE2018-69, pp. 87-92, 19th Oct. 2018

Event date： 2018.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：佐賀   Country：Japan  

Event date： 2018.10

Language：English   Presentation type：Oral presentation (general)  

Venue：台北   Country：Taiwan, Province of China  

Bingzhou Hong, Tomotaka Mori, Haisong Jiang, and Kiichi Hamamoto, “Mode Crosstalk Evaluation of Mode Selective Active Multimode Interferometer Laser Diode Based on Wavelength Spectrum Analysis Method,” Technical digest of 23rd Micro Optics Conference (MOC2018, Taipei, Taiwan), Technical digest of 23rd Micro Optics Conference (MOC2018, Taipei, Taiwan), F-6, 17th October 2018

Event date： 2018.10

Language：English   Presentation type：Oral presentation (general)  

Venue：台北   Country：Taiwan, Province of China  

Zan Hui Chen, Haisong Jiang, Wenying Li, Yu Han, Bingzhou Hong and Kiichi Hamamoto, “Proposal of Two Tangent Hole Structure for Higher CO2 Sensing Compared to Conventional PhC Cavity”, Technical digest of 23rd Micro Optics Conference (MOC2018, Taipei, Taiwan), P-90, 16th October 2018

Event date： 2018.10

Language：English   Presentation type：Oral presentation (general)  

Venue：台北   Country：Taiwan, Province of China  

Wenying Li, Yu Han, Zanhui Chen, Haisong Jiang, and Kiichi Hamamoto “Amplifier Assisted CRDS (Cavity Ring-down Spectroscopy) toward Compact Breath Sensing”, Technical digest of 23rd Micro Optics Conference (MOC2018, Taipei, Taiwan), P-85, 16th October 2018

Event date： 2018.10

Language：English   Presentation type：Oral presentation (general)  

Venue：台北   Country：Taiwan, Province of China  

Satoshi Ogawa, Ahmad Syahrin Idris, Yu Han, Haisong Jiang and Kiichi Hamamoto, “Surface Improvement Investigation of Sol-Gel SiO2 Cladding for Waveguide Device Passivation,” Technical digest of 23rd Micro Optics Conference (MOC2018, Taipei, Taiwan), P-56, 16th October 2018

Event date： 2018.10

Language：English   Presentation type：Oral presentation (general)  

Venue：台北   Country：Taiwan, Province of China  

Ahmad Syahrin Idris, Satoshi Ogawa, Haisong Jiang and Kiichi Hamamoto, “Thick (>0.8 µm) Cladding and Passivation Layers for Optical Waveguide by Using Sol-gel SiO2 Multi-step Stacking Method,” Technical digest of 23rd Micro Optics Conference (MOC2018, Taipei, Taiwan), B-3, 16th October 2018

Event date： 2018.9

Language：English   Presentation type：Oral presentation (general)  

Venue：大分大学   Country：Japan  

Kantaro Fujimoto, Haisong Jiang, and Kiichi Hamamoto, “Fundamental investigation of mode maintaining slit　waveguide,” 平成30年度（第71回）電気・情報関係学会九州支部連合大会, 12-2A-06, pp. 400, 28th Sep. 2018

Event date： 2018.9

Language：English   Presentation type：Oral presentation (general)  

Venue：大分大学   Country：Japan  

Wenying Li, Yu Han, Zanhui Chen, Haisong Jiang, Kiichi Hamamoto, “Amplifier Assisted CRDS (Cavity Ring-down Spectroscopy) toward Compact Breath Sensing,” 平成30年度（第71回）電気・情報関係学会九州支部連合大会, 12-2A-09, pp. 403, 28th Sep. 2018

Event date： 2018.9

Language：English   Presentation type：Oral presentation (general)  

Venue：大分大学   Country：Japan  

Satoshi Ogawa, Ahmad Syahrin Idris, Yu Han, Haisong Jiang and Kiichi Hamamoto, “Surface Improvement Investigation of Sol-Gel SiO2 Cladding for Waveguide Device Passivation,” 平成30年度（第71回）電気・情報関係学会九州支部連合大会, 12-2A-08, pp. 402, 28th Sep. 2018.

Event date： 2018.9

Language：English   Presentation type：Oral presentation (general)  

Venue：大分大学   Country：Japan  

Mahmoud Nasef, Kantaro Fujimoto, Haisong Jiang, Kiichi Hamamoto, “Preliminary Research on Spatial Single Dimensional Modes Demultiplexer by Adjusting Phase Wavefronts,” 平成30年度（第71回）電気・情報関係学会九州支部連合大会, 12-2A-07, pp. 401, 28th Sep. 2018

Event date： 2018.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：金沢大学   Country：Japan  

Event date： 2018.9

Language：English   Presentation type：Oral presentation (general)  

Venue：金沢大学   Country：Japan  

Bingzhou Hong, Tomotaka Mori, Haisong Jiang, and Kiichi Hamamoto, “Mode Selective Active Multimode Interferometer Laser Diode with over 40 GHz Direct Modulation Bandwidth”, 電子情報通信学会ソサイエティ大会論文集2018、Vol. 1, C-4-13, pp. 169, 12th Sep. 2018

Event date： 2018.7

Language：English   Presentation type：Oral presentation (general)  

Venue：済州島   Country：Korea, Republic of  

Kiichi Hamamoto, Yasuhiro Hinokuma, Sampad Ghosh, Ryota Kuwahata, and Haisong Jiang, “Shuffle Converter using 3D Waveguides for MCF/SMF Fan-in Fan-out Configuration toward over 1,000 Port Count Optical Matrix Switch,” Proceedings of 23rd Optoelectronics and Communication Conference, 5E2-4, 5th July 2018

Event date： 2018.4

Language：English   Presentation type：Oral presentation (general)  

Venue：Strasbourg   Country：France  

Kiichi Hamamoto and Haisong Jiang,“Active-MMI laser diode toward highspeed direct modulation based on multiple photon-photon resonance”, Proc. SPIE 10682, Semiconductor Lasers and Laser Dynamics VIII, 106820X (9 May 2018); doi:10.1117/12.2306018, 2018

Event date： 2018.3

Language：English   Presentation type：Oral presentation (general)  

Venue：SanDiego   Country：United States  

Bingzhou Hong, Tomotaka Mori, Haisong Jiang, and Kiichi Hamamoto, “Mode Selective Active Multimode Interferometer Laser Diode with over 40 GHz Direct Modulation Bandwidth,” Technical Digest of Optical Fiber Communication Conference (OFC 2018, San Diego), Th3B.4, 18 Mar 2018

Event date： 2017.11

Language：English   Presentation type：Oral presentation (general)  

Venue：東京大学駒場キャンパス   Country：Japan  

Event date： 2017.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：筑波大（茗荷谷）   Country：Japan  

Event date： 2017.9

Language：English   Presentation type：Oral presentation (general)  

Venue：福岡国際会議場   Country：Japan  

Event date： 2017.9

Language：English   Presentation type：Oral presentation (general)  

Venue：ヨーテボリ   Country：Sweden  

Multiple cavity active-Multimode Interferometer Laser Diode demonstrates multiple photon-photon resonances (8 GHz, 10 GHz, 13 GHz, 19 GHz, 23 GHz and 36 GHz) for the first time. Modulation bandwidth of at least 34 GHz was confirmed.

Event date： 2017.9

Language：Japanese   Presentation type：Symposium, workshop panel (public)  

Venue：東京都市大学   Country：Japan  

Event date： 2017.9

Language：English   Presentation type：Oral presentation (general)  

Venue：福岡国際会議場   Country：Japan  

Event date： 2017.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：福岡国際会議場   Country：Japan  

Event date： 2017.8

Language：English   Presentation type：Oral presentation (general)  

Venue：新宿京王プラザホテル   Country：Japan  

Event date： 2017.8

Language：English   Presentation type：Oral presentation (general)  

Venue：新宿京王プラザホテル   Country：Japan  

Event date： 2017.6

Language：English   Presentation type：Oral presentation (general)  

Venue：奈良   Country：Japan  

Event date： 2017.6

Language：English   Presentation type：Oral presentation (general)  

Venue：奈良   Country：Japan  

Event date： 2016.9

Language：English   Presentation type：Oral presentation (general)  

Venue：神戸   Country：Japan  

Event date： 2016.7

Language：English   Presentation type：Oral presentation (general)  

Venue：新潟国際会議場   Country：Japan  

Event date： 2016.7

Language：English   Presentation type：Oral presentation (general)  

Venue：新潟国際会議場   Country：Japan  

Event date： 2016.7

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2016.7

Language：English   Presentation type：Oral presentation (general)  

Venue：新潟国際会議場   Country：Japan  

Event date： 2016.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：九州大学   Country：Japan  

Event date： 2016.3

Language：English   Presentation type：Oral presentation (general)  

Venue：九州大学   Country：Japan  

Event date： 2016.3

Language：English   Presentation type：Oral presentation (general)  

Venue：九州大学   Country：Japan  

Event date： 2016.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：九州大学   Country：Japan  

Event date： 2016.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：九州大学   Country：Japan  

Event date： 2016.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：九州大学   Country：Japan  

Event date： 2016.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：九州大学   Country：Japan  

Event date： 2016.3

Language：Japanese  

Venue：九州大学   Country：Japan  

Event date： 2015.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：大分国際会議場   Country：Japan  

Ryosuke Sakata, Kazuhiro Tanabe, Ryo Tanaka, Haisong Jiang and Kiichi Hamamoto, “Preliminarily Propagation Loss Evaluation of Core-Top Etched Waveguide for Step-Core LP21 Mode Converter,” IEICE Technical Report, OPE2015-115, Vol. 115, No. 277, pp. 123-126

Event date： 2015.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：大分国際会議場   Country：Japan  

Luke Himbele, Tatsushi Tanaka, Ryan Imansyah, Haisong Jiang and Kiichi Hamamoto, “Single-Step Dry-Etched Lateral PIN by Using Trench Structure for Optical Mode Switch," IEICE Technical Report, OPE2015-107, Vol. 115, No. 277, pp. 81-84, 30th Oct. 2015

Event date： 2015.10

Language：English   Presentation type：Oral presentation (general)  

Venue：大分国際会議場   Country：Japan  

Bingzhou Hong, Mohammad Nasir Uddin, Takuya Kitano, Akio Tajima, Haisong Jiang, and Kiichi Hamamoto, “Theoretical Analysis of Photon-Photon Resonance on Active Multimode Interferometer Laser Diode,” IEICE Technical Report, OPE2015-91, Vol. 115, No. 2

Event date： 2015.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：大分国際会議場   Country：Japan  

Kazuhiro Tanabe, Yutaka Chaen, Ryosuke Sakata, Ryo Tanaka, Haisong Jiang and Kiichi Hamamoto, “Design Criteria for Wavelength Independent MMI Mode Converter,” IEICE Technical Report, OPE2015-117, Vol. 115, No. 277, pp. 133-136, 30th Oct. 2015

Event date： 2015.10

Language：English   Presentation type：Oral presentation (general)  

Venue：福岡国際会議場   Country：Japan  

Kazuhiro Tanabe, Yutaka Chaen, Ryosuke Sakata, Ryo Tanaka, Haisong Jiang and Kiichi Hamamoto, “Design Criteria for Wavelength Independent MMI Mode Converter,” Technical Digest of The 20th Microoptics Conference, H51, Oct. 2015

Event date： 2015.10

Language：English   Presentation type：Oral presentation (general)  

Venue：福岡国際会議場   Country：Italy  

Ryan Imansyah, Luke Himbele, Haisong Jiang, and Kiichi Hamamoto, “First Demonstration of Electrically Controlled Mode Switching,” Technical Digest of The 20th Microoptics Conference, D3, 26 Oct. 2015

Event date： 2015.10

Language：English   Presentation type：Oral presentation (general)  

Venue：福岡国際会議場   Country：Japan  

Shota Oe, Haisong Jiang, and Kiichi Hamamoto, “Proposal of 128ch Coupled Multi-Core Fiber Configuration Using Coil-Shape (MCF),” Technical Digest of The 20th Microoptics Conference (MOC’15, Fukuoka, Japan), PD5 , Oct. 2015

Event date： 2015.10

Language：English   Presentation type：Oral presentation (general)  

Venue：福岡国際会議場   Country：Japan  

Ahmad Syahrin Idris, Haisong Jiang, and Kiichi Hamamoto, “Dry Etching for Germanium Waveguides by Using CHF3 Inductively Coupled Plasm,” Technical Digest of The 20th Microoptics Conference, H23, Oct. 2015

Event date： 2015.10

Language：English   Presentation type：Oral presentation (general)  

Venue：福岡国際会議場   Country：Japan  

Haisong Jiang, Toshimichi Oiwane, and Kiichi Hamamoto, “Proposal of Novel Optical Mode Demultiplexer Based on Angled-Multimode Interference (a-MMI) Waveguide,” Technical Digest of The 20th Microoptics Conference, H47, Oct. 2015

Event date： 2015.10

Language：English   Presentation type：Oral presentation (general)  

Venue：福岡国際会議場   Country：Japan  

Takuya Kitano, Mohammad Nasir Uddin, Bingzou Hong, Akio Tajima, Haisong Jiang, and Kiichi Hamamoto, “Demonstration of photon-photon resonance peak enhancement by waveguide design modification on active multimode interferometer laser diode”, Technical Dige

Event date： 2015.10

Language：English   Presentation type：Oral presentation (general)  

Venue：福岡国際会議場   Country：Japan  

Ryosuke Sakata, Kazuhiro Tanabe, Ryo Tanaka, Haisong Jiang and Kiichi Hamamoto, “Preliminarily Propagation Loss for Core-Top Etched Waveguide for Step-Core LP21 Mode Converter,” Technical Digest of The 20th Microoptics Conference, H52, Oct. 2015

Event date： 2015.10

Language：English   Presentation type：Oral presentation (general)  

Venue：福岡国際会議場   Country：Japan  

Ryosuke Sakata, Kazuhiro Tanabe, Ryo Tanaka, Haisong Jiang and Kiichi Hamamoto, “Preliminarily Propagation Loss for Core-Top Etched Waveguide for Step-Core LP21 Mode Converter,” Technical Digest of The 20th Microoptics Conference, H52, Oct. 2015

Event date： 2015.9

Language：English   Presentation type：Oral presentation (general)  

Venue：Florence   Country：Italy  

Ryan Imansyah, Luke Himbele, Haisong Jiang, and Kiichi Hamamoto, “Single-Step Dry-Etched Lateral PIN by Using Trench Structure for Optical Mode Switch,” Technical Digest of photonics in switching 2015 (PS2015), Thl2-7, Sep. 2015

Event date： 2015.9

Language：English   Presentation type：Oral presentation (general)  

Venue：東北大学   Country：Japan  

Ryan Imansyah, Tatsushi Tanaka, Luke Himbele, Haisong Jiang and Kiichi Hamamoto, “Electrically Controlled Mode Switching Using Trench Structure,” Proceedings of The IEICE Society Conference, Vol. 1, C-3-17, pp. 91,　10th Sep. 2015

Event date： 2015.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：東北大学   Country：Japan  

Kazuhiro Tanabe, Yutaka Chaen, Ryosuke Sakata, Ryo Tanaka, Haisong Jiang and Kiichi Hamamoto, “Design Criteria for Wavelength Independent MMI Mode Converter,” Proceedings of The IEICE Society Conference, Vol. 1, C-3-23, pp.97, 9th Sep. 2015

Event date： 2015.9

Language：English   Presentation type：Oral presentation (general)  

Venue：上海   Country：China  

Wenying Li, Hirohito Hokazono, Shota Enami, Haisong Jiang and Kiichi Hamamoto, “Gas Sensing Using Silica High-Mesa Waveguide for Compact Breath Sensing,” Proceedings of The IEICE Society Conference, Vol. 1, C-3-50, pp. 124, 10th Sep. 2015

Event date： 2015.9

Language：English   Presentation type：Oral presentation (general)  

Venue：東北大学   Country：Japan  

(8) Wenying Li, Hirohito Hokazono, Shota Enami, Haisong Jiang and Kiichi Hamamoto, “Gas Sensing Using Silica High-Mesa Waveguide for Compact Breath Sensing,” Proceedings of The IEICE Society Conference, Vol. 1, C-3-50, pp. 124, 10th Sep. 2015

Event date： 2015.7

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：コープイン京都   Country：Japan  

Kazuhiro Tanabe, Yutaka Chaen, Ryosuke Sakata, Ryo Tanaka, Haisong Jiang and Kiichi Hamamoto, “Design Criteria for Wavelength Independent MMI Mode Converter,” IEICE Technical Report, OPE2015-117, Vol. 115, No. 277, pp. 133-136, 30th Oct. 2015

Event date： 2015.7

Language：English   Presentation type：Oral presentation (general)  

Venue：コープイン京都   Country：Japan  

Hirohito Hokazono, Hodaka Sakamoto, Hatem EI Serafy, Haisong Jiang and Kiichi Hamamoto, “Preliminary research on advanced OAM mode device with using MCF,” Technical Digest of The International Symposium on Extremely Advanced Transmission Technology (EXAT

Event date： 2015.7

Language：English   Presentation type：Oral presentation (general)  

Venue：コープイン京都   Country：Japan  

Ryan Imansyah, Luke Himbele, Haisong Jiang and Kiichi Hamamoto, “Mode crosstalk evaluation on optical mode switch,” Technical Digest of The International Symposium on Extremely Advanced Transmission Technology (EXAT 2015), P17, Jul. 2015

Event date： 2015.4

Language：English   Presentation type：Oral presentation (general)  

Venue：Bali   Country：Indonesia  

Ryan Imansyah, Tatsushi Tanaka, Luke Himbele, Haisong Jiang and Kiichi Hamamoto, “Mode Crosstalk Evaluation on Optical Mode Switch,” Proc. 2015 IEEE International Broadband and Photonics Conference, IBP2015-P3.2, Vol. 114, No. 453, pp. 133-136, April

Event date： 2015.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：立命大学びわこ草津キャンパス   Country：Japan  

Hodaka Sakamoto, Hirohito Hokazono, Ryota Tanaka, Haisong Jiang, and Kiichi Hamamoto, “Cross talk analysis advanced OAM mode device,” Proceedings of The IEICE General Conference, Vol. 1, B-10-48, pp. 36, 11th Mar. 2015

Event date： 2015.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：立命大学びわこ草津キャンパス   Country：Japan  

Takuya Kitano, Mohammad Nasir Uddin, Hong Bingzhou, Akio Tajima, Kazutoshi Kato, and Kiichi Hamamoto, “17.2GHz extended bandwidth active MMI LD by using photon photon resonance,” Proceedings of The IEICE General Conference, Vol. 1, C-4-4, pp. 200, 10th Mar. 2015

Event date： 2015.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：立命大学びわこ草津キャンパス   Country：Japan  

Luke Himbele, Tatsushi Tanaka, Ryan Imansyah, Haisong Jiang and Kiichi Hamamoto, “Preliminary crosstalk evaluation of optical mode switch,”　 Proceedings of The IEICE General Conference, Vol. 1, C-3-65, pp. 189, 11th Mar. 2015

Event date： 2015.2

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：宝山ホール、鹿児島   Country：Japan  

Ryota Tanaka, Hirohito Hokazono, Hodaka Sakamoto, Haisong Jiang, and Kiichi Hamamoto, ” IEICE Technical Report, OPE2014-225, Vol. 114, No. 453, pp.127-130, 20th Feb. 2015

Event date： 2015.2

Language：English   Presentation type：Oral presentation (general)  

Venue：宝山ホール、鹿児島   Country：Japan  

Ryan Imansyah, Tatsushi Tanaka, Luke Himbele, Haisong Jiang and Kiichi Hamamoto, “Preliminary Crosstalk Evaluation on Optical Mode Switch,” IEICE Technical Report, OPE2014-226, Vol. 114, No. 453, pp.133-136

Event date： 2014.12

Language：English   Presentation type：Oral presentation (general)  

Venue：機械振興会館／NTT厚木通信研究所   Country：Japan  

Mohammad Nasir Uddin, Hong Bingzhou, Takuya Kitano, Akio Tajima, Kazutoshi Kato and Kiichi Hamamoto, “Bandwidth Enhancement by Coupling to Higher Order Resonances in Active Multimode Interferometer Laser Diode,” IEICE Technical Report, OPE 2014–149, Vo. 114, No. 337, pp. 51-57, 19th Dec. 2014

Event date： 2014.12

Language：English   Presentation type：Oral presentation (general)  

Venue：機械振興会館／NTT厚木通信研究所   Country：Japan  

Mohammad Nasir Uddin, Hong Bingzhou, Takuya Kitano, Akio Tajima, Kazutoshi Kato and Kiichi Hamamoto, “Bandwidth Enhancement by Coupling to Higher Order Resonances in Active Multimode Interferometer Laser Diode,” IEICE Technical Report, OPE 2014–149, Vo. 114, No. 337, pp. 51-57, 19th Dec. 2014

Event date： 2014.10

Language：English   Presentation type：Oral presentation (general)  

Venue：長崎歴史博物館、長崎市   Country：Japan  

Mohammad Nasir Uddin, Hong Bingzhou, Takuya Kitano, Akio Tajima, Kazutoshi Kato, and Kiichi Hamamoto, “Bandwidth Enhancement by Coupling to Higher Order Resonances in Active Multimode Interferometer Laser Diode,” IEICE Technical Report, OPE 2014-93, Vo. 114, No. 281, pp. 37-42, 30th Oct. 2014

Event date： 2014.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：長崎歴史博物館、長崎市   Country：Japan  

Ryota Tanaka, Hirohito Hokazono, Hodaka Sakamoto, Haisong Jiang, and Kiichi Hamamoto, “Proposal of Novel Advanced OAM Mode for Transmission Channel Enhancement of Over N on N-core MCF,” IEICE Technical Report, OPE 2014-121, Vo. 114, No. 281, pp. 185-188, 30th Oct. 2014

Event date： 2014.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：長崎歴史博物館、長崎市   Country：Japan  

Tatsushi Tanaka, Ryan Imansyah, Luke Himble, Haisong Jiang, and Kiichi Hamamoto, “Fundamental study for realizing the optical mode switch,” IEICE Technical Report, OPE 2014-119, Vo. 114, No. 281, pp. 175-178, 30th Oct. 2014

Event date： 2014.10

Language：English   Presentation type：Oral presentation (general)  

Venue：長崎歴史博物館、長崎市   Country：Japan  

Mohammad Nasir Uddin, Hong Bingzhou, Takuya Kitano, Akio Tajima, Kazutoshi Kato, and Kiichi Hamamoto, “Bandwidth Enhancement by Coupling to Higher Order Resonances in Active Multimode Interferometer Laser Diode,” IEICE Technical Report, OPE 2014-93, Vo. 114, No. 281, pp. 37-42, 30th Oct. 2014

Event date： 2014.9

Language：English   Presentation type：Oral presentation (general)  

Venue：徳島大学、徳島市   Country：Japan  

Mohammad Nasir Uddin, Hong Bingzhou, Takuya Kitano, Akio Tajima, Kazutoshi Kato, and Kiichi Hamamoto, “Photon-Photon Resonance in Active Multimode Interferometer Laser Diode,” Proceedings of The IEICE Society Conference 2014, C-4-6, pp. 160, 23rd Sep. 2014 (Tokushima Univ., Tokushima)

Event date： 2014.9 - 2014.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：徳島大学、徳島市   Country：Japan  

Hirohito Hokazono, Ryota Tanaka, Hodaka Sakamoto, Haisong Jiang, and Kiichi Hamamoto, ” Proposal of Advanced OAM Scheme for High Transmission Capacity on MCF,” Proceedings of The IEICE Society Conference 2014, C-3-23, pp. 120, 23rd Sep. 2014 (Tokushima Univ., Tokushima)

Event date： 2014.6

Language：English   Presentation type：Oral presentation (general)  

Venue：Nice, France   Country：France  

Mohammad Nasir Uddin, Hon Bingzhou, Akio Tajima, Kazutoshi Kato and Kiichi Hamamoto, “First Observation of Photon-Photon Resonance in Active Multimode Interferometer Laser Diode,” Proceedings of European Conference on Integrated Optics / Micro Optics Conference (ECIO-MOC 2014, Nice, France), Th 4a R07, 26th June 2014

Event date： 2014.3

Language：English   Presentation type：Oral presentation (general)  

Venue：新潟大学、新潟市   Country：Japan  

Event date： 2014.3

Language：English   Presentation type：Oral presentation (general)  

Venue：新潟大学、新潟市   Country：Japan  

Event date： 2014.3

Language：English   Presentation type：Oral presentation (general)  

Venue：新潟大学、新潟市   Country：Japan  

Event date： 2014.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：新潟大学、新潟市   Country：Japan  

Event date： 2014.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：新潟大学、新潟市   Country：Japan  

Event date： 2014.3 - 2013.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：新潟大学、新潟市   Country：Japan  

Event date： 2014.3 - 2013.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：新潟大学、新潟市   Country：Japan  

Event date： 2014.1

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：鬼怒川温泉ホテル、日光市   Country：Japan  

Event date： 2013.11

Language：English   Presentation type：Oral presentation (general)  

Venue：Sapporo   Country：Japan  

Ryuta Takakura, Asuka Fujino, Tatsushi Tanaka, and Kiichi Hamamoto, “Proposal of optical mode switch configuration for four modes”, Technical Digest of The 18th Microoptics Conference, H1, pp. 56, 29 Oct. 2013

Event date： 2013.11

Language：English   Presentation type：Oral presentation (general)  

Venue：Sapporo   Country：Japan  

Kazuhiro Tanabe, Yutaka Chaen, and Kiichi Hamamoto, “Quasi-LP21 mode converter by using simple step-core structure”, Technical Digest of The International Symposium on Extremely Advanced Transmission Technology (EXAT 2013), P17, pp. 114, 7 Nov. 2013 (Sapporo Convention Center, Sapporo)

Event date： 2013.11

Language：English   Presentation type：Oral presentation (general)  

Venue：Sapporo   Country：Japan  

Ryuta Takakura, Asuka Fujino, Tatsushi Tanaka, and Kiichi Hamamoto, “Proposal of optical mode switch configuration for four modes”, Technical Digest of The 18th Microoptics Conference, H1, pp. 56, 29 Oct. 2013

Event date： 2013.11

Language：English   Presentation type：Oral presentation (general)  

Venue：Sapporo   Country：Japan  

Ryota Tanaka, Yutaka Chaen, Zhao Zhao, and Kiichi Hamamoto, “Full C-band spacial multi-mode combiner based on multi-mode interference” , Technical Digest of The International Symposium on Extremely Advanced Transmission Technology (EXAT 2013), P13, pp. 110, 7 Nov. 2013 (Sapporo Convention Center, Sapporo)

Event date： 2013.10

Language：English   Presentation type：Oral presentation (general)  

Venue：Tokyo Institute of Technology   Country：Japan  

Mohammad Nasir Uddin, Takaaki Kizu, Yasuhiro Hinokuma, Kazuhiro Tanabe, Akio Tajima, Kazutoshi Kato, and Kiichi Hamamoto, “First deomstration of high intrinsic modulation bandwidth (26.4GHz) in active multimode interferometer laser diode by using split pumping configuration”, Technical Digest of The 18th Microoptics Conference, H17, pp. 72, 29 Oct. 2013

Event date： 2013.10

Language：English   Presentation type：Oral presentation (general)  

Venue：Tokyo Institute of Technology   Country：Japan  

Miki Tsujino, Hirohito Hokazono, Jiao Chen, and Kiichi Hamamoto, “Optical amplifier assisted cavity ring down spectroscopy (CRDS) method for compact infrared sensing”, Technical Digest of The 18th Microoptics Conference, H57, pp. 112, 29 Oct. 2013

Event date： 2013.10

Language：English   Presentation type：Oral presentation (general)  

Venue：Tokyo Institute of Technology   Country：Japan  

Jiao Chen, Hirohito Hokazono, Miki Tsujino, Daisuke Nakashima, and Kiichi Hamamoto, “Proposal of multiple slot silica high-mesa waveguide for infrared sensing”, Technical Digest of The 18th Microoptics Conference, H53, pp. 108, 29 Oct. 2013

Event date： 2013.10

Language：English   Presentation type：Oral presentation (general)  

Venue：Tokyo Institute of Technology   Country：Japan  

Hirohito Hokazono, Jaio Chen, Miki Tsujino, and Kiichi Hamamoto, “First demonstration of liquid concentration measurement by using silica high-mesa waveguide”, Technical Digest of The 18th Microoptics Conference, H44, pp. 99, 29 Oct. 2013

Event date： 2013.10

Language：English   Presentation type：Oral presentation (general)  

Venue：Tokyo Institute of Technology   Country：Japan  

Yutaka Chaen, Ryouta Tanaka, and Kiichi Hamamoto, “Optical mode converter using multi-mode interference structure”, Technical Digest of The 18th Microoptics Conference, H8, pp. 63, 29 Oct. 2013

Event date： 2013.10

Language：English   Presentation type：Oral presentation (general)  

Venue：門司港海峡ロマンホール、北九州市   Country：Japan  

Event date： 2013.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：門司港海峡ロマンホール、北九州市   Country：Japan  

Event date： 2013.10

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：門司港海峡ロマンホール、北九州市   Country：Japan  

Event date： 2013.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：福岡工業大学、福岡市   Country：Japan  

Event date： 2013.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：福岡工業大学、福岡市   Country：Japan  

Event date： 2013.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：福岡工業大学、福岡市   Country：Japan  

Event date： 2013.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：福岡工業大学、福岡市   Country：Japan  

Event date： 2013.8

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：北海道大学、札幌市   Country：Japan  

Event date： 2013.7

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：慶応義塾大学日吉キャンパス、神奈川県横浜市   Country：Japan  

Event date： 2013.6 - 2013.7

Language：English   Presentation type：Oral presentation (general)  

Venue：Kyoto   Country：Japan  

Jiao Chen, Hirohito Hokazono, Daisuke Nakashima, Yasuaki Hashizume, Mikitaka Itoh, and Kiichi Hamamoto, “Low Loss Silica High-Mesa Waveguide for Infrared Sensing,” Technical Digest of 18th OptoElectronics and Communications Conference / Photonics in Switching (OECC/PS 2013, Kyoto, Japan), ThL1-1, 4th Jul. 2013

Event date： 2013.6 - 2013.7

Language：English   Presentation type：Oral presentation (general)  

Venue：Kyoto   Country：Japan  

Yutaka Chaen, Zhao Zhao, Yuuta Satou and Kiichi Hamamoto, “Quasi-LP21 Mode Converter by Using Simple Step-Core Structure,” Technical Digest of 18th OptoElectronics and Communications Conference / Photonics in Switching (OECC/PS 2013, Kyoto, Japan), TuPL-14, 2nd Jul. 2013

Event date： 2013.6 - 2013.7

Language：English   Presentation type：Oral presentation (general)  

Venue：Kyoto   Country：Japan  

Yutaka Chaen, Zhao Zhao, Yuuta Satou and Kiichi Hamamoto, “Quasi-LP21 Mode Converter by Using Simple Step-Core Structure,” Technical Digest of 18th OptoElectronics and Communications Conference / Photonics in Switching (OECC/PS 2013, Kyoto, Japan), TuPL-14, 2nd Jul. 2013

Event date： 2013.6 - 2013.7

Language：English   Presentation type：Oral presentation (general)  

Venue：Kyoto   Country：Japan  

Mohammad Nasir Uddin, Takaaki Kizu, Yasuhiro Hinokuma, Akio Tajima, Kazutoshi Kato, and Kiichi Hamamoto, “Resonance frequency enhancement by using splitted pumping region active multi-mode interferometer laser diode,” Technical Digest of 18th OptoElectronics and Communications Conference / Photonics in Switching (OECC/PS 2013, Kyoto, Japan), TuPK-7, 2nd Jul. 2013

Event date： 2013.6 - 2013.7

Language：English   Presentation type：Oral presentation (general)  

Venue：Tokyo Institute of Technology   Country：Japan  

Ryuta Takakura, Asuka Fujino, Tatsushi Tanaka, and Kiichi Hamamoto, “Proposal of optical mode switch configuration for four modes”, Technical Digest of The 18th Microoptics Conference, H1, pp. 56, 29 Oct. 2013

Event date： 2013.3 - 2013.9

Language：English   Presentation type：Oral presentation (general)  

Venue：福岡工業大学、福岡市   Country：Japan  

Event date： 2013.3

Language：English   Presentation type：Oral presentation (general)  

Venue：神奈川工科大学   Country：Japan  

Event date： 2013.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：神奈川工科大学   Country：Japan  

Event date： 2013.2 - 2013.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：大阪大学   Country：Japan  

Event date： 2013.2 - 2013.3

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：大阪大学   Country：Japan  

Event date： 2013.1

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：大阪大学   Country：Japan  

Event date： 2012.11

Language：English   Presentation type：Oral presentation (general)  

Venue：Fukuoka   Country：Japan  

Yutaka Chaen, Zhao Zhao, Haisong Jiang, and Kiichi Hamamoto, “Full C-Band Spstial Multi-Mode Combiner Based on Multi-Mode Interference”, Technical Digest of The 9th International Symposium on Novel Carbon Resource Sciences (NCRS, Fukuoka, Japan), P-53, pp. 116, 3rd Nov. 2012

Event date： 2012.11

Language：English   Presentation type：Oral presentation (general)  

Venue：Fukuoka   Country：Japan  

Daisuke Nakashima and Kiichi Hamamoto,“Proposal of Novel Strip High-Mesa Waveguide for Infrared Absorption Sensing”, Technical Digest of The 9th International Symposium on Novel Carbon Resource Sciences (NCRS, Fukuoka, Japan), P-75, pp. 138, 3rd Nov. 2012

Event date： 2012.11

Language：English   Presentation type：Oral presentation (general)  

Venue：Fukuoka   Country：Japan  

Yasuhiro Hinokuma, and Kiichi Hamamoto, “Single Wavelength Emission by Using Asymmetric Active MMI LD”, Technical Digest of The 9th International Symposium on Novel Carbon Resource Sciences (NCRS, Fukuoka, Japan), P-67, pp. 130, 3rd Nov. 2012

Event date： 2012.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：富山大学、富山市   Country：Japan  

Makoto Jizodo, Asuka Fujino, and Kiichi Hamamoto, “Proposal of Optical Spatial Mode Switch”, Proceedings of the IEICE Society Conference 2012, No. 1, C-3-22, pp. 133, 12th Sep. 2012 (Toyama University, Toyama)

Event date： 2012.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：富山大学、富山市   Country：Japan  

Hirohito Hokazono*, Daisuke Nakashima*, Jiao Chen*, Miki Tsujino*, Yasuaki Hashizume**, Mikitaka Itoh**, and Kiichi Hamamoto*, “Silica-Based High-Mesa Waveguide for Compact Breath-Sensing System”, Proceedings of the IEICE Society Conference 2012, No. 1, C-3-16, pp. 133, 11th Sep. 2012 (Toyama University, Toyama)

Event date： 2012.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：富山大学、富山市   Country：Japan  

Yuuta Satou, Yutaka Chaen, Zhao Zhao, and Kiichi Hamamoto,”Fundamental Research on Quasi-LP21 Mode Converter Device”, Proceedings of the IEICE Society Conference 2012, No. 1, C-3-15, pp. 132, 11th Sep. 2012 (Toyama University, Toyama)

Event date： 2012.6

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：機械振興会館、東京都港区   Country：Japan  

Yasuhiro Hinokuma, Yutaka Chaen, Haison Jiang, Takaaki Kizu, Takuma Hagio, Seiki Nakamura, Akio Tajima, and Kiichi Hamamto, “Single CW wavelength emission by using novel asymmetric active multi-mode interferometer (MMI) LDs”, IEICE Technical Report, Vol. 112, No. 98, LQE2012-16, pp. 13-16, 22nd June 2012 (Minato-ku, Tokyo)

Event date： 2012.3

Presentation type：Oral presentation (general)  

Venue：岡山大学津島キャンパス、岡山市   Country：Japan  

Yutaka Chaen, Zhao Zhao, Makoto Jizoudou, and Kiichi Hamamoto, “Full C-band Spatial Multi-Mode Combiner Based on Multi-Mode Interference” , Proceedings of the IEICE General Conference 2012, No.1, C-3-89, pp. 238, 23rd March 2012 (Tsushima Campus, Okayama University、Okayama city)

Event date： 2012.3

Presentation type：Oral presentation (general)  

Venue：岡山大学津島キャンパス、岡山市   Country：Japan  

Haisong Jiang, Yutaka Chaen, Takuma Hagio, Kazuisao Turuda, Makoto Jizodo、Jing Xu, Christophe Peucheret, and Kiichi Hamamoto, “All-optical flip-flop operation based on asymmetric active-multimode interferometer bi-stable laser diodes”, Proceedings of the IEICE General Conference 2012, No.1, C-3-10, pp. 159, 20th Mar. 2012 (Tsushima Campus, Okayama University, Okayama City）

Event date： 2012.3

Presentation type：Oral presentation (general)  

Venue：岡山大学津島キャンパス、岡山市   Country：Japan  

Zhao Zhao, Yutaka Chaen, and Kiichi Hamamoto, “Mode Converter by Using MMI(Multi-Mode Interference) for Mode Multiplexing Transmission”, Proceedings of the IEICE General Conference 2012, No.1, C-3-2, pp. 151, 20th Mar. 2012 (Tsushima Campus, Okayama University, Okayama City）

Event date： 2012.3

Presentation type：Oral presentation (general)  

Venue：岡山大学津島キャンパス、岡山市   Country：Japan  

Takaaki Kizu, Yasuhiro Hinokuma, Yutaka Chaen, Hisong Jiang, Takuma Hagio, Akio Tajima, and Kiichi Hamamoto, “First CW Single Wavelength Emission @RT on Active-MMI LD”, Proceedings of the IEICE General Conference 2012, No.1, C-4-15, pp. 266, 21st Mar. 2012 (Tsushima Campus, Okayama University, Okayama City）

Event date： 2012.3

Presentation type：Oral presentation (general)  

Venue：岡山大学津島キャンパス、岡山市   Country：Japan  

Yasuhiro Hinokuma, Hitoshi Takeshita, Shigeru Nakamura, Tomoyuki Hino, Kiichi Hamamoto, and Akio Tajima, “Fundamental Evaluation on 1x8 Si-Photonics Optical Switch”, Proceedings of the IEICE General Conference 2012, No.1, C-3-42, pp. 60, 22rd March 2012 (Okayama University、Okayama city）

Event date： 2012.3

Presentation type：Oral presentation (general)  

Venue：岡山大学津島キャンパス、岡山市   Country：Japan  

Makoto Jizodo, Daisuke Nakashima, Kanako Tagawa, and Kiichi Hamamoto, “Si-Wire Waveguide Optical Switch by Using Narrow Trench Electrode”, Proceedings of the IEICE General Conference 2012, No 1, C-2-46, pp.195, 22nd March 2012 (Tsushima Campus, Okayama University, Okayama, Japan)

Event date： 2012.3

Presentation type：Oral presentation (general)  

Venue：早稲田大学早稲田キャンパス、新宿区   Country：Japan  

Yasuhiro Hinokuma, Yutaka Chaen, Hisong Jiang, Takaaki Kizu, Takuma Hagio, Seiki Nakamura, Akio Tajima, and Kiichi Hamamoto, “First Single Wavelength Emission (CW@RT) on Active MMI LD”, No. 1, 16-a-F3-9, pp. 53, 20th Mar. 2012 (Waseda University, Shinjuku）

Event date： 2012.1

Language：English   Presentation type：Oral presentation (general)  

Venue：Kuala Lumpur, Malaysia   Country：Malaysia  

Yasuhiro Hinokuma, “Single Wavelength Emission on Active MMI LD”, Technical Digest of Malaysia-Japan International Institute of Technology–Kyushu University (MJIIT-KU) Seminar 2012 (Kuala Lumpur, Malaysia), 30th Jan. 2012

Event date： 2012.1

Language：English   Presentation type：Oral presentation (general)  

Venue：Kuala Lumpur, Malaysia   Country：Malaysia  

Daisuke Nakashima, “Waveguide Gas-Cell for Compact Breath Sensing System”, Technical Digest of Malaysia-Japan International Institute of Technology–Kyushu University Seminar 2012 (MJIIT-KU 2012, Kuala Lumpur, Malaysia), 30th Jan. 2012

Event date： 2011.11

Presentation type：Oral presentation (general)  

Venue：Pohang, Korea   Country：Japan  

Jiao Chen, Intekhab Alam, and Kiichi Hamamoto, “Fundamental research on scattering loss reduction for high mesa waveguide”, Proceedings of The 12th Cross Straits Symposium on Materials, Energy, and Environmental Sciences, (CSS-12, Pohang, Korea), MSP-18, pp. 81-82, 24th Nov. 2010

Event date： 2011.10 - 2011.11

Presentation type：Oral presentation (general)  

Venue：Sendai, Japan   Country：Japan  

Yutaka Chaen, Zhao Zhao, Haisong Jiang, and Kiichi Hamamoto, “Full C-Band Spatial Multi-Mode Combiner Based on Multi-Mode Interference”, Technical Digest of 17th Microoptics Conference (Sendai, Japan),H-13, 1st Nov 2011

Event date： 2011.10 - 2011.11

Presentation type：Oral presentation (general)  

Venue：Sendai, Japan   Country：Japan  

Daisuke Nakashima, and Kiichi Hamamoto, “Proposal of novel strip high-mesa waveguide for infrared absorption sensing”, Technical Digest of 17th Microoptics Conference (Sendai, Japan), H-60, 1st Nov 2011

Event date： 2011.10 - 2011.11

Presentation type：Oral presentation (general)  

Venue：Sendai, Japan   Country：Japan  

Makoto Jizodo, Haisong Jiang, Kazuisao Tsuruda, Takuma Hagio, Yutaka Chaen, Shinji Matsuo, and Kiichi Hamamoto, “Integrated 4-Bit Active-MMI High-Mesa Bi-Stable Laser Diodes Coupled with Hemispherical Lens Fiber Array”, Technical Digest of 17th Microoptics Conference (Sendai, Japan), H-29, 1st Nov 2011

Event date： 2011.9

Presentation type：Oral presentation (general)  

Venue：Geneva, Siwtzerland   Country：Japan  

(1) Haisong Jiang*, Yutaka Chaen*, Takuma Hagio*, Kazuisao Tsuruda*, Makoto Jizodo*, Jing Xu**, Chirstophe Peucheret**, Shinji Matsuo***, and Kiichi Hamamoto*, “High-Speed and Low-Energy Flip-Flop Operation of Asymmetric Active-Multimode Interferometer Bi-Stable Laser Diodes”, Proceedings of 37th European Conference on Optical Communication (ECOC 2011, Geneva, Switzerland), Th.11.LeSaleve.4, 22nd September 2011
* Kyushu University **DTU Fotonik ** NTT Photonics Laboratories

Event date： 2011.9

Presentation type：Oral presentation (general)  

Venue：北海道大学　札幌キャンパス   Country：Japan  

Daisuke Nakashima, and Kiichi Hamamoto, “Proposal of novel strip high-mesa waveguide for infrared absorption sensing”, Proceedings of the IEICE Society Conference 2011, No. 1, C-3-58, p. 180, 15th Sep. 2011

Event date： 2011.7

Presentation type：Oral presentation (general)  

Venue：Kaoshung, Taiwan   Country：Japan  

Yasuhiro Hinokuma*, Yutaka Chaen*, Haisong Jiang*, Takuma Hagio*, Akio Tajima**, and Kiichi Hamamoto*, “First Single Wavelength (CW@RT, SMSR>30dB) Active-MMI LD (Non-Grating) Based on Longitudinal Interference”, Technical Digest of 16th OptoElectronics and Communications Conference (OECC 2011, Kaoshung, Taiwan), PD6, 7th Jul. 2011

Event date： 2011.5

Presentation type：Oral presentation (general)  

Venue：Kaoshung, Taiwan   Country：Japan  

Haisong Jiang*, Yutaka Chaen*, Takuma Hagio*, Kazuisao Tsuruda*, Makoto Jizodo*, Shinji Matsuo***, and Kiichi Hamamoto*, “Single Wavelength (Non-Grating) High-Mesa Asymmetric Active-MMI All Optical Bi-Stable Laser Diodes”, Conference Proceedings of 23rd International Conference on Indium Phosphide and Related Materials, (IPRM 2011, Berlin, Germany), P32, pp. 174-177, 23rd May 2011

Event date： 2011.5

Presentation type：Oral presentation (general)  

Venue：京都工芸繊維大学   Country：Japan  

Kiichi Hamamoto, “Optical random access memory (RAM) element by using active multi-mode-interferometer (MMI), Technical Report of IPDA, IPDA11-03, pp.13-18, 11th May 2011

Event date： 2011.3

Presentation type：Oral presentation (general)  

Venue：神奈川工科大学、厚木市   Country：Japan  

Jiao Chen, and Kiichi Hamamoto, “Fundamental research on scattering loss reduction for high mesa waveguide”, Extended Abstracts of The 58th Spring Meeting of The Japanese Society of Applied Physics and Related Societies, 25a-KS-4, pp. 03-006, 25th Mar. 2011

Event date： 2011.3

Presentation type：Oral presentation (general)  

Venue：東京都市大学世田谷キャンパス   Country：Japan  

Kazuki Ikeda, Nobuyasu Hamamori and Kiichi Hamamoto, “Fundamental research on wide optical band-pass filter by using 1xN multi-mode-interference (MMI) couplers”, Proceedings of the IEICE General Conference 2011, No. 1, pp. 225, 16th Mar. 2011

Event date： 2011.3

Presentation type：Oral presentation (general)  

Venue：東京都市大学世田谷キャンパス   Country：Japan  

Makoto Jizodo*, Jiang Haisong*, Kazuisao Tsuruda*, Takuma Hagio*, Yutaka Chaen *, Shinji Matsuo** and Kiichi Hamamoto*,“Preliminary research on hemispherical lens fiber-array coupling with integrated optical random access memory (RAM) elements”, Proceedings of the IEICE General Conference 2011, No. 1, pp. 207, 14th Mar. 2011
*Kyushu University **NTT Photonics Laboratories

Event date： 2011.3

Presentation type：Oral presentation (general)  

Venue：東京都市大学世田谷キャンパス   Country：Japan  

Seiki Nakamura, Yasuhiro Hinokuma and Kiichi Hamamoto, “Fundamental Research on the Relaxation Oscillation Frequency of Active Multi-Mode Interferometer Laser Diode”, Proceedings of the IEICE General Conference 2011, C-3-33, p. 208, 15th Mar 2011 （Setagaya Campus, Tokyo City University, Setagaya, Tokyo, Japan）

Event date： 2011.3

Presentation type：Oral presentation (general)  

Venue：東京都市大学世田谷キャンパス   Country：Japan  

Yutaka Chaen*, Haisong Jiang*, Kazuisao Turuda*, Takuma Hagio*, Makoto Jizodo*, Shinji Matsuo**, and Kiichi Hamamoto*, “Designing of Active Multi-Mode Interferometer Bi-Stable Laser Diodes Using Lateral Bi-Stability”, Proceedings of the IEICE General Conference 2011, c-3-34，p.209，15th Mar. 2011 (Setagaya campus, Tokyo City University, Setagaya, Japan )
*Kyushu University **NTT Photonics Laboratories

Event date： 2011.3

Presentation type：Oral presentation (general)  

Venue：東京都市大学世田谷キャンパス   Country：Japan  

Takuma Hagio*, Haisong Jiang*, Hany Ayad Bastawrous*, Shinji Matsumoto**, and Kiichi Hamamoto*, “Low Hysteresis Threshold Current (39mA) Demonstration on Active Multi-Mode Interferometer Bi-Stable Laser Diodes Using Lateral Bi-Stability”, Proceedings of the IEICE General Conference 2011, c-3-35，p.210，15th Mar. 2011 (Setagaya campus, Tokyo City University, Setagaya, Japan )

Event date： 2011.3

Presentation type：Oral presentation (general)  

Venue：東京都市大学世田谷キャンパス   Country：Japan  

Yasuhiro Hinokuma, Seiki Nakamura, Takahira Mitomi and Kiichi Hamamoto, “1xN active-MMI LD Design for High SMSR Single Wavelength Emission”, Proceedings of the IEICE General Conference 2011, C-4-19, p. 276, 16th Mar 2011 （Setagaya Campus, Tokyo City University, Setagaya, Tokyo, Japan）

Event date： 2011.1

Presentation type：Oral presentation (general)  

Venue：阪大吹田キャンパス   Country：Japan  

Event date： 2010.10

Presentation type：Oral presentation (general)  

Venue：門司港レトロ   Country：Japan  

Yasuhiro HINOKUMA, Takahira MITOMI, and Kiichi HAMAMOTO, “Single wavelength emission using 1xN active multi-mode-interferometer laser diodes”, IEICE technical report, Vol. 110, No. 257, pp. 143-148, 29th Oct. 2010

Event date： 2010.10

Presentation type：Oral presentation (general)  

Venue：門司港レトロ   Country：Japan  

Chen Jiao , Alam Intekhab , Hamamoto Kiichi, “Fundamental research on scattering loss reduction for high mesa waveguide”, IEICE technical report, Vol. 110, No. 257, pp. 55-60, 28th Oct. 2010

Event date： 2010.10

Presentation type：Oral presentation (general)  

Venue：門司港レトロ   Country：Japan  

Zhigang ZANG, Keisuke MUKAI, Paolo NAVARETTI, Marcus DUELK, Christian VELEZ, and Kiichi HAMAMOTO, “High Power Superluminescent Light Emitting Diodes by Using Active Multi-mode Interferometer”, IEICE technical report, Vol. 110, No. 257, pp. 163-168, 29th Oct. 2010

Event date： 2010.9

Presentation type：Oral presentation (general)  

Venue：ANA Hotel, Kyoto   Country：Japan  

Haisong Jiang*, Hany Ayad Bastawrous*, Takuma Hagio*, Shinji Matsuo**, and Kiichi Hamamoto*, “Low hysteresis threshold current (39mA) demonstration using active multi-mode interferometer bi-stable laser diodes”, Conference Digest of 22nd IEEE International Semiconductor Laser Conference (ISLC 2010, Kyoto, Japan), P30, pp. 138-139, 28th September 2010
* Kyushu University ** NTT Photonics Laboratories

Event date： 2010.9

Presentation type：Oral presentation (general)  

Venue：長崎大学   Country：Japan  

Haisong Jiang, Hany Ayad Bastawrous, Takuma Hagio, Shinji Matsuo, and Kiichi Hamamoto, “Extremely wide hysteresis window (94mA) using partially saturable-absorber active MMI bi-stable laser diodes”, Extended Abstracts of The 71st Autumn Meeting of The Japan Society of Applied Physics and Related Societies, 16p-H-17, pp. 05-016, 16th Sep. 2010

Event date： 2010.9

Presentation type：Oral presentation (general)  

Venue：長崎大学   Country：Japan  

Haisong Jiang, Hany Ayad Bastawrous, Takuma Hagio, Shinji Matsuo, and Kiichi Hamamoto, “Extremely wide hysteresis window (94mA) using partially saturable-absorber active MMI bi-stable laser diodes”, Extended Abstracts of The 71st Autumn Meeting of The Japan Society of Applied Physics and Related Societies, 16p-H-17, pp. 05-016, 16th Sep. 2010

Event date： 2010.9

Presentation type：Oral presentation (general)  

Venue：大阪府立大中百舌鳥キャンパス   Country：Japan  

(Invited) Haisong Jiang, Hany Ayad Bastawrous, Takuma Hagio, Shinji Matsuo, and Kiichi Hamamoto, “Wide hysteresis active-MMI bi-stable laser diode using different lateral modes”, Proceedings of the IEICE Society Conference 2010, No. 1, C-4-11, pp. 201, 15th Sep. 2010

Event date： 2010.9

Presentation type：Oral presentation (general)  

Venue：大阪府立大中百舌鳥キャンパス   Country：Japan  

Zhigang Zang, Keisuke Mukai*, Paolo Navaretti**, Marcus Duelk**, Christian Velez**, and Kiichi Hamamoto*, “Stable and High Coupling Efficiency (>60%) Active Multi-mode Interferometer Superluminescent Light Emitting Diodes using Hemi-spherical Lens Single-mode Fiber”, Proceedings of the IEICE Society Conference 2010, No. 1, C-4-16, pp. 206, 15th Sep. 2010
*Kyushu Universtiy **EXALOS AG

Event date： 2010.3

Presentation type：Oral presentation (general)  

Venue：Convention Center, San Diego, CA   Country：United States  

Hany Ayad Bastawrous*, Haisong Jiang*, Yuichiro Tahara*, Shinji Matsuo**, and Kiichi Hamamoto*, “The optical memory elements with extremely wide hysteresis window (94mA) using partly saturable-absorber novel active MMI bi-stable laser diodes”, Technical Digest of Optical Fiber Communication Conference (OFC 2010, San Diego, USA),JWA34, 24th March 2010
* Kyushu University ** NTT Photonics Laboratories

Event date： 2010.3

Presentation type：Oral presentation (general)  

Venue：東海大学湘南キャンパス   Country：Japan  

Yasuhiro Hinokuma, Takahira Mitomi, Zhipeng Yuan, Tomoaki Fujita, and Kiichi Hamamoto, “Fundamental research on single wavelength oscillation using 1xN active-MMI LD”, Extended Abstracts of The 57th Spring Meeting of The Japan Society of Applied Physics and Related Societies, 19p-E-16, pp. 05-027, 19th Mar. 2010

Event date： 2010.3

Presentation type：Oral presentation (general)  

Venue：東北大川内キャンパス   Country：Japan  

(10) Keisuke Mukai, Zhigang Zang*, Paolo Navaretti**, Takahiro Minato*, Yasuhiro Hinokuma*, Marcus Duelk**, Christian Velez**, and Kiichi Hamamoto*, “High power superluminescent light emitting diode using active multi-mode interferometer”, Proceedings of the IEICE General Conference 2010, No. 1, C-4-24, pp. 275, 2nd Mar. 2010
*Kyushu Universtiy **EXALOS AG

Event date： 2010.3

Presentation type：Oral presentation (general)  

Venue：東北大川内キャンパス   Country：Japan  

Haisong Jiang*, Hany Ayad Bastawrous*, Yuichiro Tahara*, Shinji Matsuo** and Kiichi Hamamoto*, “Demonstration of wide hysteresis window by using different lateral modes based on active-MMI bi-stable laser diode”, Proceedings of The 2010 IEICE Society Conference, NO.3, C-4-9, pp.260, 17th March 2010 (Tohoku University, Sendai, Japan)
*Kyushu University **NTT Photonics Laboratories

Event date： 2010.3

Presentation type：Oral presentation (general)  

Venue：東北大川内キャンパス   Country：Japan  

Nobuyasu Hamamori, Zhipeng Yuan, and Kiichi Hamamoto, “C-3-43 Fundamental research on optical band-pass filter by using multi-mode interference couplers”, Proceedings of the IEICE General Conference 2010, No. 1, pp. 216, 18th Mar. 2010

Event date： 2010.2

Presentation type：Oral presentation (general)  

Venue：ホテル箱根アカデミー   Country：Japan  

Haisong Jiang*, Hany Ayad Bastawrous*, Yuichiro Tahara*, Shinji Matsuo** and Kiichi Hamamoto*, “Integrated 4-bit optical memory elements based on active multi-mode-interferometer (MM) bi-stable laser diodes with common and low operation current (55mA)”, Proceedings of Integrated Photonic Devices and its Applications, IPDA10-P03, pp.37-38, 4th February 2010 (Hotel Hakone Academy, Hakone, Japan)
*Kyushu University **NTT Photonics Laboratories

Event date： 2010.1

Presentation type：Oral presentation (general)  

Venue：京大桂キャンパス   Country：Japan  

Yuichiro Tahara*, Hany Ayad Bastawrous*, Haisong Jiang*, Shinji Matsuo** and Kiichi Hamamoto*, “Fundamental research on dense integration of memory elements for optical random access memory (RAM) by using lens coupling with fiber-array”, IEICE Technical Report, Vol. 109, No. 402, OPE2009-192, pp. 101-106, 29th January 2010 (Kyoto University, Kyoto, Japan)
*Kyushu University **NTT Photonics Laboratoreis

Event date： 2009.12

Presentation type：Oral presentation (general)  

Venue：上海交通大学   Country：China  

Haisong Jiang*, Hany Ayad Bastawrous*, Yuichiro Tahara*, Shinji Matsuo**, and Kiichi Hamamoto*,“Integrated 4-bti optical memory elements with single common and low operation current (55mA) using novel active MMI BLDs”, Proceedings of Environmental Science and Technology 4th International Symposium on Novel Carbon Resource Sciences (Chiang-hai, China), 20th November 2009
* Kyushu University ** NTT Photonics Laboratories

Event date： 2009.11

Presentation type：Oral presentation (general)  

Venue：Pusan National University   Country：Korea, Republic of  

Zhigang Zang*, Yasuhiro Hinokuma*, Takahiro Minato*, Kiichi Hamamoto*, Paolo Navaretti**, Marcus Duelk**, and Christian Velez**, “High power superluminescent light emitting diodes using active multi-mode interferometer”, Proceedings of The 11th Cross Straits Symposium on Materials, Energy, and Environmental Sciences, (CSS-11, Pusan, Korea), MS-04, pp. 23-24, 12th November 2009

Event date： 2009.10

Presentation type：Oral presentation (general)  

Venue：Mirai-kan, Tokyo   Country：Japan  

Zhigang Zang*, Paolo Navaretti**, Yasuhiro Hinokuma*, Takahiro Minato*, Marcus Duelk**, Christian Velez**, and Kiichi Hamamoto*, “115mW high power superluminescent light emitting diodes using active multi-mode interferometer”, Technical Digest of 15th Microoptics Conference (MOC 2009, Tokyo, Japan), K3, pp. 336-337, 28th October 2009
*Kyushu Universtiy **EXALOS AG

Event date： 2009.10

Presentation type：Oral presentation (general)  

Venue：Mirai-kan, Tokyo   Country：Japan  

Yasuhiro Hinokuma, and Kiichi Hamamoto, “Preliminary evaluation on single-wavelength active multi-mode-interferometer laser diodes for high power application” , Technical Digest of 15th Microoptics Conference (MOC 2009, Tokyo, Japan), J82, pp. 286-287, 27th October 2009

Event date： 2009.10

Presentation type：Oral presentation (general)  

Venue：Mirai-kan, Tokyo   Country：Japan  

Haisong Jiang*, Hany Ayad Bastawrous*, Yuichiro Tahara*, Shinji Matsuo**, and Kiichi Hamamoto*, ”Demonstration of wide hysteresis window bi-stable laser diode using different lateral mode paths in active multimode interferometer”, Technical Digest of 15th Microoptics Conference (MOC 2009, Tokyo, Japan), G5, pp. 110-111, 27th October 2009
* Kyushu University ** NTT Photonics Laboratories

Event date： 2009.10

Presentation type：Oral presentation (general)  

Venue：Mirai-kan, Tokyo   Country：Japan  

Intekhab Alam1, Yasunari Matsunaga1, Shin Hirofuji1, Takahira Mitomi1, Takahide Murayama2, Yutaka Kokaze2, Hiroyuki Wado3, Yukihiro Takeuchi3, and Kiichi Hamamoto1, “Low loss high-mesa Si/SiO2 wire waveguides fabricated using neutral loop discharge plasma etching for infrared absorption spectroscopy”, Technical Digest of 15th Microoptics Conference (MOC 2009, Tokyo, Japan), F3, pp. 90-91, 27th October 2009
1 Kyushu Univ., 2 ULVAC, Inc., 3 Denso Corp.

Event date： 2009.10

Presentation type：Oral presentation (general)  

Venue：九大筑紫キャンパス   Country：Japan  

Haisong Jiang*, Hany Ayad Bastawrous*, Yuichiro Tahara*, Shinji Matsuo** and Kiichi Hamamoto*, “Integrated 2-bit memory elements based on bi-stability between different lateral modes using active multi-mode-interferometer (MMI) for random access memory (RAM) application”, IEICE Technical Report, Vol. 109, No. 243, OPE2009-107, pp. 1-5, 23rd October 2008 (Kyushu University, Fukuoka, Japan)
*Kyushu University **NTT Photonics Laboratoreis

Event date： 2009.10

Presentation type：Oral presentation (general)  

Venue：九大筑紫キャンパス   Country：Japan  

Intekhab Alam, and Kiichi Hamamoto, “Design theory of double high-mesa wire waveguide for infrared optical absorption spectroscopy”, IEICE Technical Report, Vol. 109, No. 243, OPE2009-1３３, pp. 131-134, 23rd October 2008 (Kyushu University, Fukuoka, Japan)

Event date： 2009.10

Presentation type：Oral presentation (general)  

Venue：九大筑紫キャンパス   Country：Japan  

Kenji Hosoda, and Kiichi Hamamoto, “Beam deflector based on an optical phased array with using refractive index change”, IEICE Technical Report, Vol. 109, No. 243, OPE2009-109, pp. 11-14, 23rd October 2008 (Kyushu University, Fukuoka, Japan)

Event date： 2009.10

Presentation type：Oral presentation (general)  

Venue：九大筑紫キャンパス   Country：Japan  

Yasuhiro Hinokuma, and Kiichi Hamamoto, “Single-wavelength-emission on active multi-mode-interferometer laser diodes (active-MMI LDs)”, IEICE Technical Report, Vol. 109, No. 243, OPE2009-108, pp. 7-10, 23rd October 2008 (Kyushu University, Fukuoka, Japan)

Event date： 2009.9

Presentation type：Oral presentation (general)  

Venue：Kyushu Institute of Technology   Country：Japan  

Yasuhiro Hinokuma, and Kiichi Hamamoto, “First single-wavelength emission on active multi-mode-interferometer laser”, The 62nd Joint Conference of Electrical and Electronics Engineerings in Kyushu (IEEE-Fukuoka Section, Kyushu Institute of Technology), 04_2A_03, 29th September 2009

Event date： 2009.9

Presentation type：Oral presentation (general)  

Venue：Kyushu Institute of Technology   Country：Japan  

Intekhab Alam*, Hiroyuki Wado**, Yasuyuki Takeuchi** and Kiichi Hamamoto*, “Design theory of double high mesa Si/SiO2 wire waveguide for infrared absorption spectroscopy”, The 62nd Joint Conference of Electrical and Electronics Engineerings in Kyushu (IEEE-Fukuoka Section, Kyushu Institute of Technology), 04_2A_05, 29th September 2009
* Kyushu University ** Research Laboratories, Denso Corporation

Event date： 2009.9

Presentation type：Oral presentation (general)  

Venue：Kyushu Institute of Technology   Country：Japan  

Haisong Jiang*, Hany Ayad Bastawrous*, Yuichiro Tahara*, Shinji Matsuo**, and Kiichi Hamamoto*, “Integrated 2-bit memory elements based on active multi-mode-interferometer (active-MMI) bi-stable laser diodes (BLDs) using different lateral propagation modes”, The 62nd Joint Conference of Electrical and Electronics Engineerings in Kyushu (IEEE-Fukuoka Section, Kyushu Institute of Technology), 04_2A_04, 29th September 2009
* Kyushu University ** NTT Photonics Laboratories

Event date： 2009.9 - 2008.9

Presentation type：Oral presentation (general)  

Venue：Viena   Country：Austria  

(2) Hany Ayad Bastawrous*, Haisong Jiang*, Yuichiro Tahara*, Shinji Matsuo**, and Kiichi Hamamoto*, “Integrated 4-bti optical memory elements with single common and low operation current (55mA) using novel active MMI”, Proceedings of 35th European Conference on Optical Communication (ECOC 2009, Vienna, Austria), P.2.15, 23rd September 2009
* Kyushu University ** NTT Photonics Laboratories

Event date： 2009.9

Presentation type：Oral presentation (general)  

Venue：新潟大   Country：Japan  

Haisong Jiang*, Hany Ayad Bastawrous*, Yuichiro Tahara*, Shinji Matsuo** and Kiichi Hamamoto*, “Low operating current active MMI bi-stability laser diode for optical RAM”, Proceedings of The 2008 IEICE General Conference, No.3, C-4-12, pp.260, 17th March 2009 (Ehime University, Ehime, Japan)
*Kyushu University **NTT Photonics Laboratoreis

Event date： 2009.3

Presentation type：Oral presentation (general)  

Venue：Convention Center, San Diego, CA   Country：United States  

Hany Ayad Bastawrous*, Haisong Jiang*, Yuichiro Tahara*, Shinji Matsuo**, and Kiichi Hamamoto*, “Extremely wide and uniform hysteresis windows (32mA) for integrated optical RAM using novel active MMI”, Technical Digest of Optical Fiber Communication Conference (OFC 2009, San Diego, USA), OTuK2, 24th March 2009

Event date： 2009.3

Presentation type：Oral presentation (general)  

Venue：愛媛大   Country：Japan  

Haisong Jiang*, Hany Ayad Bastawrous*, Yuichiro Tahara*, Shinji Matsuo** and Kiichi Hamamoto*, “Low operating current active MMI bi-stability laser diode for optical RAM”, Proceedings of The 2008 IEICE General Conference, No.1, C-4-12, pp.260, 17th March 2009 (Ehime University, Ehime, Japan)

Event date： 2009.3

Presentation type：Oral presentation (general)  

Venue：愛媛大   Country：Japan  

Yasuhiro Hinokuma, and Kiichi Hamamoto, “Preliminary research on single wavelength active multi-mode interferometer laser diodes”, Proceedings of The 2008 IEICE General Conference, NO.1, C-4-11, pp.159, 17th March 2009 (Ehime University, Ehime, Japan)

Event date： 2008.10

Presentation type：Oral presentation (general)  

Venue：九大筑紫キャンパス   Country：Japan  

Hajime Matsumoto, Kenji Hosoda, Yasunari Matunaga, and Kiichi Hamamoto, “Demonsgtration of divergence less beam-deflector based on an optical phased array”, IEICE Technical Report, Vol.108, No.260, OPE2008-108, pp.89-93, 24th October 2008 (Kyushu University, Fukuoka, Japan)

Event date： 2008.10

Presentation type：Oral presentation (general)  

Venue：九大筑紫キャンパス   Country：Japan  

Alam Intekhab*, Yasunari Matsunaga*, Kosuke Kameyama*, Hiroyuki Wado**, Yukihiro Takeuchi**, and Kiichi Hamamoto**, “Demonstration of infrared absorption spectroscopy by using SOI-based Si/SiO2 high-mesa waveguides”, Vol. 108, No. 260, OPE2008-111, pp. 107-111, 24th October 2008 (Kyushu University, Fukuoka, Japan)

Event date： 2008.10

Presentation type：Oral presentation (general)  

Venue：九大筑紫キャンパス   Country：Japan  

Haisong Jiang*, Hany Ayad Bastawrous*, Hirotaka Saigaku*, Yuichiro Tahara”, Shinji Matsuo**, and Kiichi Hamamoto*, “Optical random access memory (RAM) based on bi-stability between different lateral modes using novel active multi-mode-interferometer (MMI)”, Vol. 108, No. 260, OPE2008-110, pp. 101-105, 24th October 2008 (Kyushu University, Fukuoka, Japan)

Event date： 2008.10

Presentation type：Oral presentation (general)  

Venue：九大筑紫キャンパス   Country：Japan  

Teppei Fukuda, Kazunori Okamoro, Yasuhiro Hinokuma, and Kiichi Hamamoto, “Phase-locked array laser diodes by using 1xN active MMI”, IEICE Technical Report, Vol.108, No.260, OPE2008-109, pp.95-100, 24th October 2008 (Kyushu University, Fukuoka, Japan)

Event date： 2008.9

Presentation type：Oral presentation (general)  

Venue：Ohita University   Country：Japan  

Hajime Matsumoto, Kenji Hosoda, Yasunari Matsunaga, and Kiichi Hamamoto, “Demonstration of Divergence Less Beam-Deflector Based on an Optical Phased Array”, The 61st Joint Conference of Electrical and Electronics Engineerings in Kyushu (IEEE-Kyushu section), 03_1P_06, 2008.09.24 (Ohita University)

Event date： 2008.9

Presentation type：Oral presentation (general)  

Venue：Ohita University   Country：Japan  

Haisong Jiang*, Hany Ayad Bastawrous*, Hirotaka Saikaku*, Yuichiro Tahara*, Shinji Matsuo**, and Kiichi Hamamoto*, “Optical Random Access Memory (RAM) Based on Bi-Stability between Different Lateral Modes Using Novel Active Multi-Mode-Interferometer (MMI)”, The 61st Joint Conference of Electrical and Electronics Engineerings in Kyushu (IEEE-Kyushu section), 03_1P_09, 2008.09.24

Event date： 2008.9

Presentation type：Oral presentation (general)  

Venue：Ohita University   Country：Japan  

Intekhab Alam*, Yasunari Matsunaga*, Kosuke Kameyama*, Hiroyuki Wado**, Yasuyuki Takeuchi** and Kiichi Hamamoto*, “First demonstration of infrared absorption spectroscopy by using SOI based Si/SiO2 high mesa waveguides”, The 61st Joint Conference of Electrical and Electronics Engineerings in Kyushu (IEEE-Kyushu section), 03_1P_08, 2008.09.24 (Ohita University)

Event date： 2008.9

Presentation type：Oral presentation (general)  

Venue：Ohita University   Country：Japan  

Teppei Fukuda, Kazunori Okamoto, Yasuhiro Hinokuma, and Kiichi Hamamoto, “Demonstration of phase-locked array laser diodes using 1xN active multi-mode-interferometer”, The 61st Joint Conference of Electrical and Electronics Engineerings in Kyushu (IEEE-Kyushu section), 03_1P_07, 2008.09.24

Event date： 2008.9

Presentation type：Oral presentation (general)  

Venue：Brussels   Country：Belgium  

Hany Ayad Bastawrous*, Hirotaka Saigaku*, Haisong Jiang*, Yuichiro Tahara*, Shinji Matsuo**, and Kiichi hamamoto*, “A novel active MMI bi-stable lased using cross gain saturation between fundamental and first order modes”, Proceedings of The 34th European Conference on Optical Communication (ECOC 2008, Brussels, Belgium), P.2.15, pp.81-82, September 2008

Event date： 2008.9

Presentation type：Oral presentation (general)  

Venue：明治大   Country：Japan  

Yasunari Matsunaga*, Kosuke Kameyama*, Hiroyuki Wado**, Yasuyuki Takeuchi** and Kiichi Hamamoto*, “Infrared absorption spectroscopy using SOI-based Si/SiO2 high-mesa waveguide”, Proceedings of The 2008 IEICE Society Conference”, No. 1, C-3-72, pp. 194, 19th September 2008 (Meiji University, Kawasaki, Japan)

Event date： 2008.9

Venue：中部大   Country：Japan  

Kenji Hosoda, Hajime Matsumoto, Yasunari Matsunaga, and Kiichi Hamamoto, “Study of divergence free space deflected beam based on an optical phased array”, Extended Abstracts, The 69th Autumn Meeting of The Japan Society of Applied Physics, No.3, 2p-P3-4, pp.1019, 2nd September 2008 (Chubu University, Aichi, Japan)

Event date： 2008.9

Venue：中部大   Country：Japan  

Haisong Jiang*, Hany Ayad Bastawrous*, Hirotaka Saikaku*, Yuichiro Tahara*, Shinji Matsuo**, and Kiichi Hamamoto*, “Optical RAM based on bi-stability between different lateral modes”, Extended Abstracts, The 69th Autumn Meeting of The Japan Society of Applied Physics, No.3, 2p-P3-6, pp.1020, 2nd September 2008 (Chubu University, Aichi, Japan)

Event date： 2008.9

Venue：中部大   Country：Japan  

Teppei Fukuda, Kazunori Okamoto, Yasuhiro Hinokuma, and Kiichi Hamamoto, “1xN active MMI-LDs for energy space-transmission”, Extended Abstracts, The 69th Autumn Meeting of The Japan Society of Applied Physics, No.3, 2p-P3-5, pp.1019, 2nd September 2008 (Chubu University, Aichi, Japan)

Presentation type：Oral presentation (general)  

Venue：日本大学、千葉県   Country：Japan  

Kosuke Kameyama, Yasunari Matsunaga, and Kiichi Hamamoto, High air-phase optical-field-confinement in double high-mesa waveguide cell for compact breath-sensing system

Presentation type：Oral presentation (general)  

Venue：九州大学筑紫キャンパス   Country：Japan  

Double high mesa quasi hollow waveguide cell for compact breath-sensing system via infrared spectroscopy

Presentation type：Oral presentation (general)  

Venue：青山学院大学　相模原キャンパス   Country：Japan  

Proposal of novel pulse-peak resonance CRD (cavity ring-down) method for compact breath-sensing system via infrared spectroscopy

Presentation type：Oral presentation (general)  

Venue：青山学院大学　相模原キャンパス   Country：Japan  

Propagation loss evaluation of high mesa waveguide for compact breath-sensing system via infrared spectroscopy

Presentation type：Oral presentation (general)  

Venue：名城大学　天白キャンパス   Country：Japan  

Infrared spectroscopy for multiple breath-contents by using superluminescent LED (SLED)

Language：English   Presentation type：Oral presentation (general)  

Venue：Salt Lake City, Utah   Country：United States  

Presentation type：Oral presentation (general)  

Venue：鳥取大学、鳥取市   Country：Japan  

Hany Ayad Bastawrous, Hirotaka Saikaku, and Kiichi Hamamoto, "Preliminary research on a novel principle of optical memory based on MMI", Proceeding of The IEICE 2007 Society Conference, C-3-27

Presentation type：Oral presentation (general)  

Venue：北海道工業大学、札幌市   Country：Japan  

Kazunori Okamoto, Teppei Fukuda, and Kiichi Hamamoto, "1xN active MMI-LDs for energy space-transmission"

Presentation type：Oral presentation (general)  

Venue：北海道工業大学、札幌市   Country：Japan  

Hajime Matsumoto, Takahiro Minato, Kazunori Okamoto, and Kiichi Hamamoto, "Laser beam deflection control using arrayed waveguide with active MMI laser diode for energy space-transmission"

Presentation type：Oral presentation (general)  

Venue：北海道工業大学、札幌市   Country：Japan  

Ｈｉｒｏｔａｋａ Saikaku, Hany Ayad Bastawrous, Kiichi Hamamoto, "Theoretical resarches in the principle of optical RAM for next generation all optical routers"

Presentation type：Oral presentation (general)  

Venue：九州工業大学、北九州市   Country：Japan  

Kosuke Kameyama, Yasunari Matsunaga, and Kiichi Hamamoto, Propagation loss reduction and sensitivity improvement of SOI-based high-mesa waveguide for compact breath-sensing system

Presentation type：Oral presentation (general)  

Venue：九州工業大学、北九州市   Country：Japan  

Kazunori Okamoto, Teppei Fukuda, and Kiichi Hamamoto, "1xN activ e MMI-LDs for energy space-transmission"

Presentation type：Oral presentation (general)  

Venue：九州工業大学、北九州市   Country：Japan  

Hajime Matsumoto, Takahiro Minato, Kazunori Okamoto, and Kiichi Hamamoto, "Laser beam deflection control using arrayed waveguide with active MMI laser diode for energy space-transmission"

Event date： 2021.9

Language：English   Presentation type：Oral presentation (general)  

Venue：オンライン   Country：Japan  

Shun Matsubara, Tomoya Zennouji, Haisong Jiang, and Kiichi Hamamoto, “Fundamental study toward direct coupling between MCF and optical mode switch (2) -Automatic waveguide recognition trial-,” Tech. Dig. IEICE Society Conf., Electron., Vol. 1, C-3/4-45, pp. 123, 15th Sep, 2021

Event date： 2021.9

Language：English   Presentation type：Oral presentation (general)  

Venue：オンライン   Country：Japan  

Keiichiro Shoda, Yunjie Wang, He Xiao, Keiichiro Kozu, Jiang Haisong, and Kiichi Hamamoto, “Fundamental study of nano-pixel waveguide design using machine learning (Ⅰ),” Tech. Dig. IEICE Society Conf., Electron., Vol. 1, C-3/4-1, pp. 79, 14th Sep, 2021

Event date： 2021.9

Language：English   Presentation type：Oral presentation (general)  

Venue：オンライン   Country：Japan  

Yunjie Wang, Keiichiro Shoda, He Xiao, Haisong Jiang, Kiichi Hamamoto, and Keiichiro Kozu, “Fundamental study of nano-pixel waveguide design using machine learning (Ⅱ),” Tech. Dig. IEICE Society Conf., Electron., Vol. 1, C-3/4-2, pp. 80, 14th Sep, 2021

Event date： 2021.3

Language：English   Presentation type：Oral presentation (general)  

Venue：オンライン   Country：Japan  

Shun Matsubara, Keisuke Iwasaki, Haisong Jiang, and Kiichi Hamamoto, “Preliminary study of 3 dimensional waveguide fabrication using mosquito method toward multi-core fiber direct coupling,” Tech. Dig. IEICE General Conf. 2021, Vol. 1, B-10-41, pp. 199, 10th Mar. 2021

Event date： 2021.3

Language：English   Presentation type：Oral presentation (general)  

Venue：オンライン   Country：Japan  

Event date： 2021.3

Language：English   Presentation type：Oral presentation (general)  

Venue：オンライン   Country：Japan  

Event date： 2021.3

Language：English   Presentation type：Oral presentation (general)  

Venue：オンライン   Country：Japan  

Event date： 2020.10

Language：English   Presentation type：Oral presentation (general)  

Venue：on-line   Country：Taiwan, Province of China  

Event date： 2020.10

Language：English   Presentation type：Oral presentation (general)  

Venue：on-line   Country：Taiwan, Province of China  

Event date： 2020.10

Language：English   Presentation type：Oral presentation (general)  

Venue：on-line   Country：Taiwan, Province of China  

Event date： 2020.10

Language：English   Presentation type：Oral presentation (general)  

Venue：on-line   Country：Taiwan, Province of China  

Event date： 2020.9

Language：English   Presentation type：Oral presentation (general)  

Venue：on-line   Country：Japan  

Event date： 2020.9

Language：English   Presentation type：Oral presentation (general)  

Venue：on-line   Country：Japan  

Event date： 2020.9

Language：English   Presentation type：Oral presentation (general)  

Venue：on-line   Country：Japan  

Event date： 2020.9

Language：English   Presentation type：Oral presentation (general)  

Venue：on-line   Country：Japan  

Event date： 2020.3

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2020.3

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2020.3

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2019.12

Language：English   Presentation type：Oral presentation (general)  

Venue：鹿児島   Country：Japan  

Satoshi Ogawa, Haisong Jiang, and Kiichi Hamamoto, “Proposal of the 1×N Optical Mode Switch Based on the Spatial Single Dimensional Mode,” Technical Digest of Photonic Device Workshop, P-14, 5th Dec. 2019

Event date： 2019.12

Language：English   Presentation type：Oral presentation (general)  

Venue：鹿児島   Country：Japan  

Wenying Li, Yu Han, Zanhui Chen, Haisong Jiang, and Kiichi Hamamoto, “Compact breath sensing using amplifier assisted CRDS (cavity ring-down spectroscopy),” Technical Digest of Photonic Device Workshop, P-09, 5th Dec. 20192019

Event date： 2019.10

Language：English   Presentation type：Oral presentation (general)  

Venue：海口市   Country：China  

Kiichi Hamamoto, “Active-MMI laser diodes and optical mode switches - Toward high speed interconnection and flexible mode-division multiplexing network -,” Technical Digest of International Workshop of Optical Signal Processing and Optical Switching, Keynote-1, 30th October 2019

Event date： 2019.10

Language：English   Presentation type：Oral presentation (general)  

Venue：Chikushi campus, Kyushu Univ.   Country：Japan  

Shingo murakami, Bingzhou Hong, Haisong Jiang and Kiichi Hamamoto, “Observation of 60 GHz and 20 GHz Multiple Photon-Photon Resonances Using Active Multimode Interferometer Laser Diodes,” IEICES Technical Report, Session 8-4, 25 Oct 2019

Event date： 2019.10 - 2019.12

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Mahmoud Nasef, Kantaro Fujimoto, Haisong Jiang, and Kiichi Hamamoto, “Propagation Mode Retention Using Strongly Coupled Multi-Core Fiber,” IEICES Technical Report, P-08, 25 Oct 2019

Event date： 2019.10 - 2019.12

Language：English   Presentation type：Oral presentation (general)  

Country：Japan  

Mahmoud Nasef, Kantaro Fujimoto, Haisong Jiang, and Kiichi Hamamoto, “Propagation Mode Retention Using Strongly Coupled Multi-Core Fiber,” IEICES Technical Report, P-08, 25 Oct 2019

Event date： 2019.10

Language：English   Presentation type：Oral presentation (general)  

Venue：鹿児島   Country：Japan  

Mahmoud Nasef, Kantaro Fujimoto, Haisong Jiang and Kiichi Hamamoto, “Propagation Mode Retention at Fiber Bending Region Using Strongly Coupled Multi-Core Fiber,” IEICE Technical Report, OPE2019-88, Vol. 119, No. 231, pp. 119-124, 18th Oct. 2019

Event date： 2019.10

Language：English   Presentation type：Oral presentation (general)  

Venue：鹿児島   Country：Japan  

Yu Han, Wenying Li, Haisong Jiang, and Kiichi Hamamoto, “Significant Propagation Loss Reduction on Silicon High-Mesa Waveguides Using Thermal Oxidation Technique,” IEICE Technical Report, LQE2019-45, Vol. 119, No. 231, pp. 11-14, 17th Oct. 2019

Event date： 2019.10

Language：English   Presentation type：Oral presentation (general)  

Venue：鹿児島   Country：Japan  

Zan Hui Chen, Wenying Li, Yu Han, Haisong Jiang and Kiichi Hamamoto, “Proposal of Two Tangent Hole Structure for Higher Sensitivity Gas Sensor,” IEICE Technical Report, OPE2019-68, Vol. 119, No. 231, pp. 22-25, 17th Oct. 2019

Event date： 2019.10

Language：English   Presentation type：Oral presentation (general)  

Venue：鹿児島   Country：Japan  

Satoshi Ogawa, Haisong Jiang, and Kiichi Hamamoto, “Proposal of the 1xN optical mode switch based on the spatial single dimensional mode,” IEICE Technical Report, OPE2019-84, Vol. 119, No. 231, pp. 99-104, 18th Oct. 2019

Event date： 2019.10

Language：English   Presentation type：Oral presentation (general)  

Venue：台北   Country：Taiwan, Province of China  

Kiichi Hamamoto, “Active-MMI laser diodes and optical mode switches - Toward high speed interconnection and flexible mode-division multiplexing network -,” Technical Digest of Si and Photonic Integration Workshop, Plenary 3, 17th October 2019

Event date： 2019.9

Language：English   Presentation type：Oral presentation (general)  

Venue：大分   Country：Japan  

Shingo murakami, Bingzhou Hong, Haisong Jiang and Kiichi Hamamoto, “Observation of 60 GHz and 20 GHz Multiple Photon-Photon Resonances Using Active Multimode Interferometer Laser Diodes,” Tech. Dig. JCEEE, 07-2A-04, pp. 376, 28th Sep. 2019

Event date： 2019.9

Language：English   Presentation type：Oral presentation (general)  

Venue：大分   Country：Japan  

Yu Han, Wenying Li, Haisong Jiang and Kiichi Hamamoto, “Significant Propagation Loss Reduction on Silicon High-Mesa Waveguides Using Thermal Oxidation Technique,” Tech. Dig. JCEEE, 07-2A-01, pp. 373, 28th Sep. 2019

Event date： 2019.9

Language：English   Presentation type：Oral presentation (general)  

Venue：大分   Country：Japan  

Mahmoud Mohamed Nasef, Kantaro Fijumoto, Haisong Jiang and Kiichi Hamamoto, “Propagation Mode Retention at Fiber Bending Region Using Strongly Coupled Multi-Core Fiber,” Tech. Dig. JCEEE, 07-2A-02, pp. 374, 28th Sep. 2019

Event date： 2019.9

Language：English   Presentation type：Oral presentation (general)  

Venue：大分   Country：Japan  

Satoshi Ogawa, Haisong Jiang, and Kiichi Hamamoto, “Proposal of 1×N Optical Mode Switch Based on Spatial Single Dimensional Mode,” Tech. Dig. JCEEE, 07-2A-03, pp. 375, 28th Sep. 2019

Event date： 2019.9

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：大阪大学   Country：Japan  

Haisong Jiang, Mahmoud Nasef, Kantaro Fujimoto, and Kiichi Hamamoto, “Spatial Single Dimensional Mode Demultiplexer Based on Slab Waveguide,” Tech. Dig. IEICE, C-3-53, 13rd Sep. 2019

Event date： 2019.9

Language：English   Presentation type：Oral presentation (general)  

Venue：大阪大学   Country：Japan  

Shingo murakami, Bingzhou Hong, Haisong Jiang and Kiichi Hamamoto, “Observation of 60 GHz and 20 GHz Multiple Photon-Photon Resonances Using Active Multimode Interferometer Laser Diodes,” Tech. Dig. IEICE, C-3-11, 10th Sep. 2019

Event date： 2019.9

Language：English   Presentation type：Oral presentation (general)  

Venue：大阪大学   Country：Japan  

Yu Han, Wenying Li, Haisong Jiang, and Kiichi Hamamoto, “Significant Propagation Loss Reduction on Silicon High-Mesa Waveguides Using Thermal Oxidation Technique,” Tech. Dig. IEICE, C-3-31, 12th Sep. 2019

Event date： 2019.9

Language：English   Presentation type：Oral presentation (general)  

Venue：大阪大学   Country：Japan  

Mahmoud Nasef, Kantaro Fujimoto, Haisong Jiang, and Kiichi Hamamoto, “Propagation Mode Retention at Fiber Bending Region Using Strongly Coupled Multi-Core Fiber”, Tech. Dig. IEICE, B-13-5, 11th Sep. 2019

Event date： 2019.7

Language：English  

Venue：Fukuoka   Country：Japan  

Slit structure is proposed to achieve stable I^st order mode emission for mode selective LD. As a result, 3.6dB improvement in mode XT is confirmed in the actually implemented device, compared to those without slit one.

Event date： 2019.7

Language：English  

Venue：Fukuoka   Country：Japan  

We have exploited thermal oxidation technique to silicon high-mesa waveguides for sensing-application. Significant propagation loss reduction from 1.45 to 0.84 dB/cm at a waveguide width of 500 nm has been achieved by the technique successfully.

Event date： 2019.7

Language：English  

Venue：Fukuoka   Country：Japan  

Strongly coupled MCF is studied in propagation mode retaining capability as regular multimode fiber has an issue of mode crosstalk. As a result, mode retention characteristics of 5dB at 80 mm bending radius has been confirmed successfully.