Fumio Koyama

According to our database, Fumio Koyama authored at least 52 papers between 2004 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2024

Enhanced high-frequency modulation of single-mode 850nm VCSELs via dual transverse-cavity integration.

Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiaodong Gu, Moustafa Ahmed, Fumio Koyama

IEICE Electron. Express, 2024

SM-TCC-VCSEL-based 800 Gbps Linear Drive Pluggable Transceiver.

Yamato Iwama, Takatoshi Yagisawa, Satoshi Ide, Kazutaka Takeda, Chang Ge, Xiodong Gu, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

High Bandwidth (>35GHz) 1060nm Single-mode Transverse Coupled-cavity VCSEL Array for Single-mode Fiber Transmission.

Hameeda R. Ibrahim, Chang Ge, Xiaodong Gu, Babu D. Padullaparthi, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

2023

Full 3-inch Wafer Processed 1060 nm Single-mode Transverse Coupled-cavity VCSEL for Data Transmission in Standard 1300nm Single-mode Fiber.

Chang Ge, Boxuan Zhang, Xiaodong Gu, Susumu Kinoshita, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2023

16-ch 1060-nm Single-mode Bottom-emitting Metal-aperture VCSEL Array for Co-packaged Optics.

Liang Dong, Xiaodong Gu, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2023

2022

1060nm Single-mode Transverse Coupled Cavity VCSEL with Surface Relief Engineering for 80Gbps PAM4 Modulation.

Shanting Hu, Xiaodong Gu, Hameeda R. Ibrahim, Masanori Nakahama, Satoshi Shinada, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2022

2021

Static and dynamic characteristics of double transverse coupled cavity VCSELs for high speed modulations.

Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiaodong Gu, Moustafa Ahmed, Fumio Koyama

IEICE Electron. Express, 2021

Coupled mode analysis of high-speed transverse coupled cavity vertical-cavity surface-emitting laser for low frequency chirp operations.

Shanting Hu, Fumio Koyama

IEICE Electron. Express, 2021

Surface grating loaded VCSEL with single mode power of over 80 mW.

Shanting Hu, Ahmed Hassan, Xiaodong Gu, Masanori Nakahama, Fumio Koyama

IEICE Electron. Express, 2021

Solid-state VCSEL beam scanner with ultra-large field of view and high resolution.

Ruixiao Li, Zeuku Ho, Xiaodong Gu, Satoshi Shinada, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

1060nm single-mode metal aperture VCSEL array with transverse resonance for 5km single-mode fiber transmission.

Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiodong Gu, Satoshi Shinada, Moustafa Ahmed, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

Record High Power Single-mode Operation and Beam Steering of VCSEL-Integrated Amplifier/Beam Scanner.

Shanting Hu, Xiaodong Gu, Ahmed M. A. Hassan, Masanori Nakahama, Satoshi Shinada, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

Compact 1D/2D VCSEL Beam Scanner with Enhanced Field of View and High Resolution.

Ruixiao Li, Xiaodong Gu, Satoshi Shinada, Fumio Koyama

Proceedings of the European Conference on Optical Communication, 2021

Recent progress of VCSEL Photonics and their applications.

Fumio Koyama

Proceedings of the European Conference on Optical Communication, 2021

1060nm Single-mode Metal-aperture VCSEL Array with Transverse Resonance and Low Power Consumption below 50 fJ/bit.

Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiodong Gu, Satoshi Shinada, Moustafa Ahmed, Fumio Koyama

Proceedings of the European Conference on Optical Communication, 2021

2020

Lateral integration of VCSEL and amplifier with resonant wavelength detuning design.

Shanting Hu, Masashi Takanohashi, Xiaodong Gu, Akihiro Matsutani, Fumio Koyama

IEICE Electron. Express, 2020

Real-Time Structured-Light Depth Sensing Based on Ultra-Compact, Non-Mechanical VCSEL Beam Scanner.

Ruixiao Li, Masashi Takanohashi, Shanting Hu, Xiaodong Gu, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

Net 321.24-Gb/s IMDD Transmission Based on a >100-GHz Bandwidth Directly-Modulated Laser.

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

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

Enhanced-Field-of-View Solid-State VCSEL Beam Scanner with Lateral Resolution Points of More than 1200.

Ruixiao Li, Zeuku Ho, Xiaodong Gu, Fumio Koyama

Proceedings of the European Conference on Optical Communications, 2020

Single-mode and High-speed Intracavity Metal Aperture VCSEL with Transverse Coupled Cavity Effect.

Hameeda R. Ibrahim, Ahmed M. A. Hassan, Moustafa Ahmed, Fumio Koyama

Proceedings of the European Conference on Optical Communications, 2020

2019

Full C-Band Wavelength Demultiplexer with Optical Gain for Use in Wavelength Selective Switch.

Ryosuke Togashi, Xiaodong Gu, Takahiro Sakaguchi, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

Two-Dimensional Beam Steering Device Based on VCSEL Slow-Light Waveguide Array with Amplifier Function.

Keisuke Kondo, Xiaodong Gu, Zeuku Ho, Akihiro Matsutani, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

2018

Active Bragg Reflector Waveguide Demultiplexer Array with Over 100 Wavelength Channels and Optical Gain for Large Port-count WSS.

Xiaodong Gu, Masanori Nakahama, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

2015

Energy efficient tunable light sources for next generation flexible access networks.

Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2015

Over 30 GHz modulation of 850 nm transverse coupled cavity vertical-cavity surface-emitting laser.

Xiaodong Gu, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama

Proceedings of the European Conference on Optical Communication, 2015

2014

Compact wavelength selective switch based on high-density Bragg reflector waveguide array with 120 output ports.

Xiaodong Gu, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2014

Low driving voltage (< 400mVpp) electro-absorption modulator laterally integrated with VCSEL.

Hamed Dalir, Yuta Takahashi, Fumio Koyama

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2014

60-Channel wavelength selective switch on Bragg reflector waveguides array with 125 output-ports.

Xiaodong Gu, Kazunori Seno, Hiromasa Tanobe, Fumio Koyama

Proceedings of the European Conference on Optical Communication, 2014

High-speed compact electro-absorption modulator laterally integrated with VCSEL.

Hamed Dalir, Yuta Takahashi, Fumio Koyama

Proceedings of the European Conference on Optical Communication, 2014

2013

Compact beam deflector based on slow-light Bragg reflector waveguide monolithically integrated with VCSEL.

Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama

IEICE Electron. Express, 2013

2012

Wavelength Trimming of Micro-Machined VCSELs.

Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama

IEICE Trans. Electron., 2012

Electro-thermal tuning of MEMS VCSEL with giant wavelength-temperature dependence.

Masanori Nakahama, Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama

IEICE Electron. Express, 2012

Lateral integration of MEMS VCSEL and slow light amplifier boosting single mode power.

Masanori Nakahama, Toshikazu Shimada, Fumio Koyama

IEICE Electron. Express, 2012

2011

Spatial mode multiplexer/demultiplexer based on tapered hollow waveguide.

Hamed Dalir, Yasushi Yokota, Fumio Koyama

IEICE Electron. Express, 2011

Bandwidth enhancement of single-mode VCSEL with lateral optical feedback of slow light.

Hamed Dalir, Fumio Koyama

IEICE Electron. Express, 2011

2009

Proposal of gain-matched VCSELs with a thermally actuated MEMS structure for wide temperature operations.

Hayato Sano, Fumio Koyama

IEICE Electron. Express, 2009

VCSEL photonics.

Fumio Koyama

IEICE Electron. Express, 2009

2008

High speed response of nonlinear optical phase-shifter based on vertical micro-cavity saturable absorber.

Satoshi Suda, Fumio Koyama, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah

IEICE Electron. Express, 2008

Modeling and experiment on tapered hollow waveguide multiplexer for multi- wavelength VCSEL array.

Akihiro Imamura, Naoto Kitabayashi, Fumio Koyama

IEICE Electron. Express, 2008

Beam steering and tilt coupling in tunable hollow waveguide.

Akihiro Imamura, Fumio Koyama

IEICE Electron. Express, 2008

Proposal of total-internal-reflection optical switch with slowing light in Bragg reflector waveguide.

Ayumi Fuchida, Fumio Koyama

IEICE Electron. Express, 2008

2007

12th Optoelectronics and Communications Conference (OECC) and 16th International Conference on Integrated Optics and Optical Fiber Communication (IOOC 2007).

Hideo Kuwahara, Fumio Koyama, Tetsuya Miki

IEEE Commun. Mag., 2007

2005

Joint Special Section on Recent Progress in Optoelectronics and Communications.

Ken-ichi Kitayama, Thas A. Nirmalathas, Kimio Oguchi, Fumio Koyama

IEICE Trans. Electron., 2005

All-optical regenerator with re-polarization function based on dual optical injection VCSEL.

Koichi Hasebe, Yutaka Onishi, Fumio Koyama

IEICE Electron. Express, 2005

Novel polarization controller based on injection-locked vertical-cavity surface-emitting laser.

Koichi Hasebe, Yutaka Onishi, Fumio Koyama

IEICE Electron. Express, 2005

2004

Thermal cross-talk evaluation of densely integrated vertical cavity surface emitting laser array.

Yasuhiro Uchiyama, Takashi Kondo, Kazutaka Takeda, Akihiro Matsutani, Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama

IEICE Electron. Express, 2004

Spot-size and incident angle dependence of filtering characteristics of narrow pass-band dielectric multilayer filters.

Satoshi Suda, Fumio Koyama

IEICE Electron. Express, 2004

Fabrication and characterization of hollow waveguide distributed bragg reflectors.

Yasuki Sakurai, Akihiro Matsutani, Fumio Koyama

IEICE Electron. Express, 2004

Modeling of a low-loss spot-size converter for hollow waveguides with sub-wavelength air core.

Yasuki Sakurai, Fumio Koyama

IEICE Electron. Express, 2004

Enhanced modulation bandwidth of surface-emitting laser with external optical feedback.

Tomoaki Ota, Takeshi Uchida, Takashi Kondo, Fumio Koyama

IEICE Electron. Express, 2004

Metal-aperture surface emitting laser with nano metal particle for near-field optics.

Jiro Hashizume, Fumio Koyama

IEICE Electron. Express, 2004

Modeling of hollow waveguide optical switch with variable air core.

Chang-Hwan Bae, Fumio Koyama

IEICE Electron. Express, 2004