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Journal Articles
- 2024
[j29]Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiaodong Gu, Moustafa Ahmed
, Fumio Koyama:
Enhanced high-frequency modulation of single-mode 850nm VCSELs via dual transverse-cavity integration. IEICE Electron. Express 21(4): 20230620 (2024)- 2021
- [j28]Shanting Hu, Ahmed Hassan, Xiaodong Gu, Masanori Nakahama, Fumio Koyama:
Surface grating loaded VCSEL with single mode power of over 80 mW. IEICE Electron. Express 18(11): 20210202 (2021) - [j27]Shanting Hu, Fumio Koyama:
Coupled mode analysis of high-speed transverse coupled cavity vertical-cavity surface-emitting laser for low frequency chirp operations. IEICE Electron. Express 18(13): 20210239 (2021) - [j26]Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiaodong Gu, Moustafa Ahmed, Fumio Koyama:
Static and dynamic characteristics of double transverse coupled cavity VCSELs for high speed modulations. IEICE Electron. Express 18(22): 20210419 (2021) - 2020
- [j25]Shanting Hu, Masashi Takanohashi, Xiaodong Gu, Akihiro Matsutani, Fumio Koyama:
Lateral integration of VCSEL and amplifier with resonant wavelength detuning design. IEICE Electron. Express 17(2): 20190688 (2020) - 2013
- [j24]Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama:
Compact beam deflector based on slow-light Bragg reflector waveguide monolithically integrated with VCSEL. IEICE Electron. Express 10(22): 20130842 (2013) - 2012
- [j23]Masanori Nakahama, Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama:
Electro-thermal tuning of MEMS VCSEL with giant wavelength-temperature dependence. IEICE Electron. Express 9(5): 416-421 (2012) - [j22]Masanori Nakahama, Toshikazu Shimada, Fumio Koyama:
Lateral integration of MEMS VCSEL and slow light amplifier boosting single mode power. IEICE Electron. Express 9(6): 544-551 (2012) - [j21]Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama:
Wavelength Trimming of Micro-Machined VCSELs. IEICE Trans. Electron. 95-C(2): 237-242 (2012) - 2011
- [j20]Hamed Dalir, Yasushi Yokota, Fumio Koyama:
Spatial mode multiplexer/demultiplexer based on tapered hollow waveguide. IEICE Electron. Express 8(9): 684-688 (2011) - [j19]Hamed Dalir, Fumio Koyama:
Bandwidth enhancement of single-mode VCSEL with lateral optical feedback of slow light. IEICE Electron. Express 8(13): 1075-1081 (2011) - 2009
- [j18]Fumio Koyama:
VCSEL photonics. IEICE Electron. Express 6(11): 651-672 (2009) - [j17]Hayato Sano, Fumio Koyama:
Proposal of gain-matched VCSELs with a thermally actuated MEMS structure for wide temperature operations. IEICE Electron. Express 6(12): 883-888 (2009) - 2008
- [j16]Satoshi Suda, Fumio Koyama, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah:
High speed response of nonlinear optical phase-shifter based on vertical micro-cavity saturable absorber. IEICE Electron. Express 5(4): 131-135 (2008) - [j15]Ayumi Fuchida, Fumio Koyama:
Proposal of total-internal-reflection optical switch with slowing light in Bragg reflector waveguide. IEICE Electron. Express 5(9): 349-353 (2008) - [j14]Akihiro Imamura, Fumio Koyama:
Beam steering and tilt coupling in tunable hollow waveguide. IEICE Electron. Express 5(11): 405-410 (2008) - [j13]Akihiro Imamura, Naoto Kitabayashi, Fumio Koyama:
Modeling and experiment on tapered hollow waveguide multiplexer for multi- wavelength VCSEL array. IEICE Electron. Express 5(12): 451-456 (2008) - 2007
- [j12]Hideo Kuwahara, Fumio Koyama, Tetsuya Miki:
12th Optoelectronics and Communications Conference (OECC) and 16th International Conference on Integrated Optics and Optical Fiber Communication (IOOC 2007). IEEE Commun. Mag. 45(11): 42 (2007) - 2005
- [j11]Koichi Hasebe, Yutaka Onishi, Fumio Koyama:
Novel polarization controller based on injection-locked vertical-cavity surface-emitting laser. IEICE Electron. Express 2(8): 274-279 (2005) - [j10]Koichi Hasebe, Yutaka Onishi, Fumio Koyama:
All-optical regenerator with re-polarization function based on dual optical injection VCSEL. IEICE Electron. Express 2(11): 338-343 (2005) - [j9]Ken-ichi Kitayama, Thas A. Nirmalathas, Kimio Oguchi, Fumio Koyama:
Joint Special Section on Recent Progress in Optoelectronics and Communications. IEICE Trans. Electron. 88-C(5): 857-858 (2005) - [j8]Ken-ichi Kitayama, Thas A. Nirmalathas, Kimio Oguchi, Fumio Koyama:
Joint Special Section on Recent Progress in Optoelectronics and Communications. IEICE Trans. Commun. 88-B(5): 1852 (2005) - 2004
- [j7]Jiro Hashizume, Fumio Koyama:
Metal-aperture surface emitting laser with nano metal particle for near-field optics. IEICE Electron. Express 1(4): 77-80 (2004) - [j6]Yasuki Sakurai, Akihiro Matsutani, Fumio Koyama:
Fabrication and characterization of hollow waveguide distributed bragg reflectors. IEICE Electron. Express 1(4): 81-85 (2004) - [j5]Yasuki Sakurai, Fumio Koyama:
Modeling of a low-loss spot-size converter for hollow waveguides with sub-wavelength air core. IEICE Electron. Express 1(6): 115-119 (2004) - [j4]Tomoaki Ota, Takeshi Uchida, Takashi Kondo, Fumio Koyama:
Enhanced modulation bandwidth of surface-emitting laser with external optical feedback. IEICE Electron. Express 1(13): 368-372 (2004) - [j3]Satoshi Suda, Fumio Koyama:
Spot-size and incident angle dependence of filtering characteristics of narrow pass-band dielectric multilayer filters. IEICE Electron. Express 1(14): 442-446 (2004) - [j2]Yasuhiro Uchiyama, Takashi Kondo, Kazutaka Takeda, Akihiro Matsutani, Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama:
Thermal cross-talk evaluation of densely integrated vertical cavity surface emitting laser array. IEICE Electron. Express 1(17): 545-550 (2004) - [j1]Chang-Hwan Bae, Fumio Koyama:
Modeling of hollow waveguide optical switch with variable air core. IEICE Electron. Express 1(18): 551-555 (2004)
Conference and Workshop Papers
- 2024
- [c24]Hameeda R. Ibrahim, Chang Ge, Xiaodong Gu, Babu D. Padullaparthi, Fumio Koyama:
High Bandwidth (>35GHz) 1060nm Single-mode Transverse Coupled-cavity VCSEL Array for Single-mode Fiber Transmission. OFC 2024: 1-3 - [c23]Yamato Iwama, Takatoshi Yagisawa, Satoshi Ide, Kazutaka Takeda, Chang Ge, Xiodong Gu, Fumio Koyama:
SM-TCC-VCSEL-based 800 Gbps Linear Drive Pluggable Transceiver. OFC 2024: 1-3 - 2023
- [c22]Liang Dong, Xiaodong Gu, Fumio Koyama:
16-ch 1060-nm Single-mode Bottom-emitting Metal-aperture VCSEL Array for Co-packaged Optics. OFC 2023: 1-3 - [c21]Chang Ge, Boxuan Zhang, Xiaodong Gu, Susumu Kinoshita, Fumio Koyama:
Full 3-inch Wafer Processed 1060 nm Single-mode Transverse Coupled-cavity VCSEL for Data Transmission in Standard 1300nm Single-mode Fiber. OFC 2023: 1-3 - 2022
- [c20]Shanting Hu, Xiaodong Gu, Hameeda R. Ibrahim, Masanori Nakahama, Satoshi Shinada, Fumio Koyama:
1060nm Single-mode Transverse Coupled Cavity VCSEL with Surface Relief Engineering for 80Gbps PAM4 Modulation. OFC 2022: 1-3 - 2021
- [c19]Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiodong Gu, Satoshi Shinada, Moustafa Ahmed, Fumio Koyama:
1060nm Single-mode Metal-aperture VCSEL Array with Transverse Resonance and Low Power Consumption below 50 fJ/bit. ECOC 2021: 1-4 - [c18]Fumio Koyama:
Recent progress of VCSEL Photonics and their applications. ECOC 2021: 1-77 - [c17]Ruixiao Li, Xiaodong Gu, Satoshi Shinada, Fumio Koyama:
Compact 1D/2D VCSEL Beam Scanner with Enhanced Field of View and High Resolution. ECOC 2021: 1-4 - [c16]Shanting Hu, Xiaodong Gu, Ahmed M. A. Hassan, Masanori Nakahama, Satoshi Shinada, Fumio Koyama:
Record High Power Single-mode Operation and Beam Steering of VCSEL-Integrated Amplifier/Beam Scanner. OFC 2021: 1-3 - [c15]Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiodong Gu, Satoshi Shinada, Moustafa Ahmed, Fumio Koyama:
1060nm single-mode metal aperture VCSEL array with transverse resonance for 5km single-mode fiber transmission. OFC 2021: 1-3 - [c14]Ruixiao Li, Zeuku Ho, Xiaodong Gu, Satoshi Shinada, Fumio Koyama:
Solid-state VCSEL beam scanner with ultra-large field of view and high resolution. OFC 2021: 1-3 - 2020
- [c13]Hameeda R. Ibrahim, Ahmed M. A. Hassan, Moustafa Ahmed, Fumio Koyama:
Single-mode and High-speed Intracavity Metal Aperture VCSEL with Transverse Coupled Cavity Effect. ECOC 2020: 1-4 - [c12]Ruixiao Li, Zeuku Ho, Xiaodong Gu, Fumio Koyama:
Enhanced-Field-of-View Solid-State VCSEL Beam Scanner with Lateral Resolution Points of More than 1200. ECOC 2020: 1-4 - [c11]Nikolaos-Panteleimon Diamantopoulos, Hiroshi Yamazaki, Suguru Yamaoka, Munehiko Nagatani, Hidetaka Nishi, Hiromasa Tanobe, Ryo Nakao, Takuro Fujii, Koji Takeda, Takaaki Kakitsuka, Hitoshi Wakita, Minoru Ida, Hideyuki Nosaka, Fumio Koyama, Yutaka Miyamoto, Shinji Matsuo:
Net 321.24-Gb/s IMDD Transmission Based on a >100-GHz Bandwidth Directly-Modulated Laser. OFC 2020: 1-3 - [c10]Ruixiao Li, Masashi Takanohashi, Shanting Hu, Xiaodong Gu, Fumio Koyama:
Real-Time Structured-Light Depth Sensing Based on Ultra-Compact, Non-Mechanical VCSEL Beam Scanner. OFC 2020: 1-3 - 2019
- [c9]Keisuke Kondo, Xiaodong Gu, Zeuku Ho, Akihiro Matsutani, Fumio Koyama:
Two-Dimensional Beam Steering Device Based on VCSEL Slow-Light Waveguide Array with Amplifier Function. OFC 2019: 1-3 - [c8]Ryosuke Togashi, Xiaodong Gu, Takahiro Sakaguchi, Fumio Koyama:
Full C-Band Wavelength Demultiplexer with Optical Gain for Use in Wavelength Selective Switch. OFC 2019: 1-3 - 2018
- [c7]Xiaodong Gu, Masanori Nakahama, Fumio Koyama:
Active Bragg Reflector Waveguide Demultiplexer Array with Over 100 Wavelength Channels and Optical Gain for Large Port-count WSS. OFC 2018: 1-3 - 2015
- [c6]Xiaodong Gu, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama:
Over 30 GHz modulation of 850 nm transverse coupled cavity vertical-cavity surface-emitting laser. ECOC 2015: 1-3 - [c5]Fumio Koyama:
Energy efficient tunable light sources for next generation flexible access networks. OFC 2015: 1-3 - 2014
- [c4]Hamed Dalir, Yuta Takahashi, Fumio Koyama:
High-speed compact electro-absorption modulator laterally integrated with VCSEL. ECOC 2014: 1-3 - [c3]Xiaodong Gu, Kazunori Seno, Hiromasa Tanobe, Fumio Koyama:
60-Channel wavelength selective switch on Bragg reflector waveguides array with 125 output-ports. ECOC 2014: 1-3 - [c2]Hamed Dalir, Yuta Takahashi, Fumio Koyama:
Low driving voltage (< 400mVpp) electro-absorption modulator laterally integrated with VCSEL. OFC 2014: 1-3 - [c1]Xiaodong Gu, Fumio Koyama:
Compact wavelength selective switch based on high-density Bragg reflector waveguide array with 120 output ports. OFC 2014: 1-3
Coauthor Index
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