Kyushu University Academic Staff Educational and Research Activities Database
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Researcher information
Kiichi Hamamoto Last modified date：2013.5.29

Professor / Electrical engineering sciences
Department of Electrical and Materials Science
Faculty of Engineering Sciences


Graduate School
Department of Applied Science for Electronics and Materials
Interdisciplinary Graduate School of Engineering Sciences
Undergraduate School
Department of Electrical Engineering and Computer Science
School of Engineering
Other Organization
Institute for Ionized Gas and Laser Research


E-Mail
Homepage
[URL]
Introduction, Member, Research Thema, Photo album, and others.
Phone
092-583-7604
Fax
092-583-7898
Academic Degree
Dr. Sc. Techn.
Field of Specialization
opto-electronics, photonic device, semiconductor, opto-electronic communication,
Outline Activities
Opto-electronics, espetially novel laser diodes, novel photonic integrated circuits, and others have been researched and developed by using optical communication related technology and plasma processings. These activity will be exploited to new application field, not only optical communication system.
Research
Research Interests
  • R&D of fundamental technology on highly functional opto-electric packet router
    keyword : Optical communication, opto-electric packet router, optical swtich
    2011.09.
  • R&D of Innovative Optical Communication Infrastructure
    keyword : Optical communication, multi-mode multiplexing transmission, multi-mode light source
    2011.09.
  • Optical memory elements for all optical router
    keyword : Optical memory, random access memory, router, active MMI, bi-stable laser diode
    2006.09～2011.03.
  • High power laser diodes and beam deflectors for energy transmission system
    keyword : High power, laser diode, beam deflector, energy transmission,
    2006.06.
  • Photonic integrated circuits for bio-sensor (breath sensing)
    keyword : photonic integrated circuit, high-mesa, SOI, infrared spectroscopy,
    2005.04.
Current and Past Project
  • Longitudinal interference on active-MMI for single wavelength laser diode
  • Multi-mode devices for future exa-bit optical communication
  • Fundamental research on high performance ectro-optic packet router
Academic Activities
Books
 Show All Books >>
1. Kiichi Hamamoto,Active Multi-Mode-Interferometer Laser Diodes and Semiconductor Optical Amplifiers,Hartung -Gorre Verlag,2000.11.
Reports
 Show All Reports >>
Papers
 Show All Papers >>
1. Daisuke Nakashima, 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,Applied Physics Express (APEX), Vol. 5, pp. 062202-1 - 062202-3, Jun. 2012,2012.06. .
2. Yasuhiro Hinokuma, Yutaka Chaen, Haisong Jiang, Takuma Hagio, Seiki Nakamura, Akio Tajima, 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,IEICE Electronics Express (ELEX), Vol. 9, No. 18, pp. 1448-1453, Sep. 2012,2012.09. .
3. 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,Applied Physics Letters, Vol. 100, No. 31, pp. 10801-10804, Jan. 2012,2012.01. .
4. 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,Vol. 19, No. 26, pp. B119-B124, Nov. 2011,2011.11. .
5. 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,IEEE Journal of Selected Topics in Quantum Electronics, Vol. 17, No. 5, pp. 1258-1263, Sep. 2011,2011.09. .
6. 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,IEEE Photonics Technology Letters, Vol. 23, No. 17, pp. 1261-1263, Sep. 2011,2011.09. .
7. 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,IEICE Transactions on Electronics, Vol. E94-C, No. 5, pp. 862-864, May 2011,2011.05. .
8. Intekhab Alam, and Kiichi Hamamoto,Slot waveguide by using double high-mesa structure for optical absorption sensing,JJAP,Vol. 49, No. 12, pp. 122503-1-9, Dec. 2010,2010.12. .
9. 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 2010,2010.05. .
10. 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,Vol. 31, No1, pp. 1-6,　June 2009,2009.06. .
11. 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 2009,2009.02. .
12. 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 2008,2008.06. .
13. 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. .
14. Syogo Shimizu, Mohd Dannial Bin Razali, Kenichi Kasahara, Kiichi Hamamoto, Masaki Ohya, Koichi Naniwae, Jan De Merlier, Kazuhiro Shiba, Shinya Sudo, and Tatsuya Sasaki,First deirect observation of self-imaging effect in activve multimode-interference semiconductor laser diodes,Applied Physics Letters,Vol. 89, 011106-1～01106-3,2006.07.
15. Kiichi Hamamoto, Jan De Merlier, Masaki Ohya, Kazuhiro Shiba, Koichi Naniwae, Shinya Sudo, and Tatsuya Sasaki,First demonstration of novel active multi-mode interferometer (MMI) LDs integrated with 1st order-mode permitted waveguides,IEICE Electronics Express,第2巻第13号399～403頁,2005.07.
16. Masaki Ohya, Koichi Naniwae, Shinya Sudo, Tatsuya Sasaki and Kiichi Hamamoto,Over 1-Watt Output Power with Low Driving Voltage 14xx-nm Pump Laser Diodes Using Active Multi-Mode-Interferometer,Electronics Letters誌,第40巻第17号1063～1064頁,2004.08.
17. Kiichi Hamamoto, Koichi Naniwae, and Masaki Ohya,High Power with Low Electric Power Consumption Active Multi-Mode-Interferometer (MMI) Laser Diode for Fiber-Amplifier,Electronics Letters誌,第38巻第11号517～519頁,2002.05.
18. Kiichi Hamamoto, Emilio Gini, Christoph Holtmann and Hans Melchior,Single-Transverse-Mode Active Multi-Mode-Interferometer 1.45um High Power Laser Diode,Applied Physics B誌,第B73巻pp. 571～574頁,2001.05.
19. Kiichi Hamamoto, Emilio Gini, Christoph Holtmann, Hans Melchior, Shinya Sudo, Kazuo Mori, Tatsuya Sasaki, and Masayuki Yamaguchi,Active Multimode Interferometer Semiconductor Optical Amplifier,Electronics Letters誌,第36巻第14号1218～1220頁,2000.07.
20. Koji Kudo, Takao Morimoto, Keiichiro Yashiki, Yoshitaka Yokoyama, Kiichi Hamamoto and Masayuki Yamaguchi,Wavelength-Selectbable Microarray Light Sources of Multiple Ranges Simultaneously Fabricated on Single Wafer,Electronics Letters誌,第36巻第8号745～747頁,2000.04.
21. Koji Kudo, Kenichiro Yashiki, Tatsuya Sasaki, Yoshitaka Yokoyama, Kiichi Hamamoto, Takao Morimoto, and Masayuki Yamaguchi,1.55-um Wavelength-Selectable Microarray DFB-LD’s with Monolithically Integrated MMI Combiner, SOA, and EA-Modulator,IEEE Photonics Technology Letters誌,第12巻第3号242～244頁,2000.03.
22. Kiichi Hamamoto, Emilio Gini, Christoph Holtmann, Hans Melchior and Tatsuya Sasaki,Single Transverse Mode Active Multimode Interferometer Laser Diode Demonstrated via 1.48um High Power Application,Electronics Letters誌,第36巻第2号138～139頁,2000.01.
23. Kiichi Hamamoto, Emilio Gini, Christoph Holtmann and Hans Melchior,Single Transverse Mode Active MMI InGaAsP/InP Laser Diode,Electronics Letters誌,第34巻第5号462～464頁,1998.03.
24. Takeshi Takeuchi, Tatsuya Sasaki, Kiichi Hamamoto, Masako Hayashi, Kikuo Makita, Kenko Taguchi, and Keiro Komatsu,A Transceiver PIC for Bidirectional Optical Communication Fabricated by Bandgap Energy Controlled Selective MOVPE,IEICE Trans. Electron.誌,第E80-C巻第1号54～61頁,1997.01.
25. Kiichi Hamamoto, Tatsuya Sasaki, Takashi Matsumoto and Keiro Komatsu,Insertion-Loss-Free 1x4 Optical Switch Fabricated Using Band-Gap Energy Controlled Selective MOVPE,Electronics Letters誌,第32巻第24号2265～2266頁,1996.11.
26. Takeshi Takeuchi, Tatsuya Sasaki, Masako Hayashi, Kiichi Hamamoto, Kikuo Makita, Kenko Taguchi, and Keiro Komatasu,A transceiver PIC for bi-directional optical communication fabricated by bandgap energy controlled selective MOVPE,IEEE Photonics Technology Letters誌,第8巻第3号361～363頁,1996.03.
27. Kiichi Hamamoto and Keiro Komatsu,Insertion-Loss-Free 2x2 InGaAsP/InP Optical Switch Fabricated Using Band-Gap Energy Controlled Selective MOVPE,Electronics Letters誌,第31巻第20号1779～1781頁,1995.09.
28. Kiichi Hamamoto, Hiroaki Chida, Takashi Miyazaki, and Shin Ishikawa,High-Power 0.98um Strained Quantum-Well Lasers Fabricated Using In Situ Monitored Reactive Ion Beam Etching,IEEE Photonics Technology Letters誌,第7巻第6号602～604頁,1995.06.
29. Kiichi Hamamoto, Shigeo Sugou, Keiro Komatsu, and Mitsuhiro Kitamura,Extremely Low Loss 4x4 GaAs/AlGaAs Optical Matrix Switch,Electronics Letters誌,第29号第17巻1580～1581頁,1993.08.
30. Kiichi Hamamoto, Takayoshi Anan, Keiro Komatsu and Ikuo Mito,Preliminary Reliability Evaluations of GaAs/AlGaAs Electro-Optic Directional Coupler Switches,Japanese Journal of Applied Physics誌,第32巻第3B号L390～L391頁,1993.03.
31. Kiichi Hamamoto, Takayoshi Anan, Keiro Komatsu, and Mitsunori Sugimoto,First 8x8 Semiconductor Optical Matrix Switch Using GaAs/AlGaAs Electro-Optic Guided-Wave Directional Couplers,Electronics Letters誌,第28巻第5号441～443頁,1992.02.
32. Keiro Komatsu, Kiichi Hamamoto, Mitsunori Sugimoto, Akira Ajisawa, and Akira Suzuki,4x4 GaAs/AlGaAs Optical Matrix Switches with Uniform Device Characteristics Using Alternating dB Electrooptic Guided-Wave Directional Couplers,Journal of Lightwave Technology誌,第9巻第7号871～878頁,1991.07.
33. Kiichi Hamamoto, Hajime Ozaki, Kazutomi Suzuki, Mitsuru Yano, Kenji Nakatani, and Hiroshi Okaniwa,The Influence of Unsteady State Plasma on The Properties of a-Si:H Films Formed by Glow Discharge Chemical Vapour Deposition,Thin Solid Films誌,第177巻161～170頁,1988.10.
34. Electrical Properties of Hydrogenated Amorphous Silicon on A Polymer Film Substrate under Tensile Strain,Applied Physics Letters誌,第54巻第17号1678～1680頁,1988.04.
Presentations
 Show All Presentations >>
1. 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. 
2. 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. 
3. 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. 
4. 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. 
5. 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. 
6. 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). 
7. 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). 
8. 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). 
9. 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). 
10. 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. 
11. 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. 
12. 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. 
13. 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. 
14. 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. 
15. (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
. 
16. 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）. 
17. 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). 
18. 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). 
19. 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）. 
20. 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）. 
21. 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）. 
22. 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）. 
23. 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. 
24. 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. 
25. 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. 
26. 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
. 
27. 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）. 
28. 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）. 
29. 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
. 
30. 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 ). 
31. 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. 
32. 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. 
33. 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
. 
34. 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
. 
35. 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. 
36. 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. 
37. 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. 
38. 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. 
39. 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. 
40. (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. 
41. 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
. 
42. 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. 
43. 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. 
44. (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
. 
45. 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
. 
46. 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. 
47. 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
. 
48. 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
. 
49. 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. 
50. 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
. 
51. 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. 
52. 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
. 
53. 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.
. 
54. 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
. 
55. 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
. 
56. 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. 
57. (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
. 
58. 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). 
59. 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). 
60. 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). 
61. 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
. 
62. 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
. 
63. 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. 
64. 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. 
65. 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
. 
66. 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).
67. 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. 
68. 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). 
69. 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). 
70. 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). 
71. 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). 
72. 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). 
73. 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). 
74. 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). 
75. 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). 
76. 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). 
77. 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). 
78. 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). 
79. Kosuke Kameyama, Yasunari Matsunaga, and Kiichi Hamamoto, High air-phase optical-field-confinement in double high-mesa waveguide cell for compact breath-sensing system. 
80. Kosuke Kameyama, Yasunari Matsunaga, and Kiichi Hamamoto, Propagation loss reduction and sensitivity improvement of SOI-based high-mesa waveguide for compact breath-sensing system. 
81. Kazunori Okamoto, Teppei Fukuda, and Kiichi Hamamoto, "1xN activ e MMI-LDs for energy space-transmission". 
82. 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". 
83. 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. 
84. Kazunori Okamoto, Teppei Fukuda, and Kiichi Hamamoto, "1xN active MMI-LDs for energy space-transmission". 
85. 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". 
86. Ｈｉｒｏｔａｋａ Saikaku, Hany Ayad Bastawrous, Kiichi Hamamoto, "Theoretical resarches in the principle of optical RAM for next generation all optical routers". 
87. Proposal of novel pulse-peak resonance CRD (cavity ring-down) method for compact breath-sensing system via infrared spectroscopy. 
88. Propagation loss evaluation of high mesa waveguide for compact breath-sensing system via infrared spectroscopy. 
89. Infrared spectroscopy for multiple breath-contents by using superluminescent LED (SLED). 
90. Double high mesa quasi hollow waveguide cell for compact breath-sensing system via infrared spectroscopy. 
Membership in Academic Society
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Awards
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Educational
Educational Activities
Applied Scinece for Electronics and Materials, Interdisiplinary Graduate School of Engineering and Siences
Department of Electrical Engineering and Computer Sience, Faculty of Engineering


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