Fumio Koyama

Publication Activity (10 Years)

Years Active: 2004-2024
Publications (10 Years): 23

Top Topics

Ambient Illumination

Low Power Consumption

Top Venues

IEICE Electron. Express

Publications

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)
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)
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) (2024)
Liang Dong, Xiaodong Gu, Fumio Koyama
16-ch 1060-nm Single-mode Bottom-emitting Metal-aperture VCSEL Array for Co-packaged Optics. OFC (2023)
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)
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)
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)
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) (2021)
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)
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) (2021)
Ruixiao Li, Xiaodong Gu, Satoshi Shinada, Fumio Koyama
Compact 1D/2D VCSEL Beam Scanner with Enhanced Field of View and High Resolution. ECOC (2021)
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) (2021)
Fumio Koyama
Recent progress of VCSEL Photonics and their applications. ECOC (2021)
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)
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)
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)
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)
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)
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)
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) (2020)
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)
Ryosuke Togashi, Xiaodong Gu, Takahiro Sakaguchi, Fumio Koyama
Full C-Band Wavelength Demultiplexer with Optical Gain for Use in Wavelength Selective Switch. OFC (2019)
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)
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)
Fumio Koyama
Energy efficient tunable light sources for next generation flexible access networks. OFC (2015)
Hamed Dalir, Yuta Takahashi, Fumio Koyama
High-speed compact electro-absorption modulator laterally integrated with VCSEL. ECOC (2014)
Xiaodong Gu, Kazunori Seno, Hiromasa Tanobe, Fumio Koyama
60-Channel wavelength selective switch on Bragg reflector waveguides array with 125 output-ports. ECOC (2014)
Xiaodong Gu, Fumio Koyama
Compact wavelength selective switch based on high-density Bragg reflector waveguide array with 120 output ports. OFC (2014)
Hamed Dalir, Yuta Takahashi, Fumio Koyama
Low driving voltage (< 400mVpp) electro-absorption modulator laterally integrated with VCSEL. OFC (2014)
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) (2013)
Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama
Wavelength Trimming of Micro-Machined VCSELs. IEICE Trans. Electron. (2) (2012)
Masanori Nakahama, Toshikazu Shimada, Fumio Koyama
Lateral integration of MEMS VCSEL and slow light amplifier boosting single mode power. IEICE Electron. Express 9 (6) (2012)
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) (2012)
Hamed Dalir, Yasushi Yokota, Fumio Koyama
Spatial mode multiplexer/demultiplexer based on tapered hollow waveguide. IEICE Electron. Express 8 (9) (2011)
Hamed Dalir, Fumio Koyama
Bandwidth enhancement of single-mode VCSEL with lateral optical feedback of slow light. IEICE Electron. Express 8 (13) (2011)
Hayato Sano, Fumio Koyama
Proposal of gain-matched VCSELs with a thermally actuated MEMS structure for wide temperature operations. IEICE Electron. Express 6 (12) (2009)
Fumio Koyama
VCSEL photonics. IEICE Electron. Express 6 (11) (2009)
Ayumi Fuchida, Fumio Koyama
Proposal of total-internal-reflection optical switch with slowing light in Bragg reflector waveguide. IEICE Electron. Express 5 (9) (2008)
Akihiro Imamura, Fumio Koyama
Beam steering and tilt coupling in tunable hollow waveguide. IEICE Electron. Express 5 (11) (2008)
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) (2008)
Akihiro Imamura, Naoto Kitabayashi, Fumio Koyama
Modeling and experiment on tapered hollow waveguide multiplexer for multi- wavelength VCSEL array. IEICE Electron. Express 5 (12) (2008)
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) (2007)
Koichi Hasebe, Yutaka Onishi, Fumio Koyama
All-optical regenerator with re-polarization function based on dual optical injection VCSEL. IEICE Electron. Express 2 (11) (2005)
Ken-ichi Kitayama, Thas A. Nirmalathas, Kimio Oguchi, Fumio Koyama
Joint Special Section on Recent Progress in Optoelectronics and Communications. IEICE Trans. Electron. (5) (2005)
Ken-ichi Kitayama, Thas A. Nirmalathas, Kimio Oguchi, Fumio Koyama
Joint Special Section on Recent Progress in Optoelectronics and Communications. IEICE Trans. Commun. (5) (2005)
Koichi Hasebe, Yutaka Onishi, Fumio Koyama
Novel polarization controller based on injection-locked vertical-cavity surface-emitting laser. IEICE Electron. Express 2 (8) (2005)
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) (2004)
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) (2004)
Yasuki Sakurai, Akihiro Matsutani, Fumio Koyama
Fabrication and characterization of hollow waveguide distributed bragg reflectors. IEICE Electron. Express 1 (4) (2004)
Jiro Hashizume, Fumio Koyama
Metal-aperture surface emitting laser with nano metal particle for near-field optics. IEICE Electron. Express 1 (4) (2004)
Chang-Hwan Bae, Fumio Koyama
Modeling of hollow waveguide optical switch with variable air core. IEICE Electron. Express 1 (18) (2004)
Tomoaki Ota, Takeshi Uchida, Takashi Kondo, Fumio Koyama
Enhanced modulation bandwidth of surface-emitting laser with external optical feedback. IEICE Electron. Express 1 (13) (2004)
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) (2004)