Fumio Koyama - RankMe

57 papers Journal 29Unranked 28

Year	Rank	Type	Title / Venue / Authors
2025	—	`conf`	2.88 Terabit-Per-Second 16-Channel VCSEL Array for Co-Packaged Optics with Multi-Core Fiber. ECOC Liang Dong, Xiaodong Gu, Fumio Koyama
2025	—	`conf`	An Ultra-Compact 50-Gbaud × 16-Channel CPO Transceiver Employing a 1060-nm Single-Mode VCSEL Array and Multicore Fibres. ECOC Wataru Yoshida, Tomonori Azuma, Liang Dong, Kazuya Nagashima, Sho Yoneyama, Kensho Nishizaki, Jumpei Miike, Makoto Miyoshi, Xiaodong Gu, Satoshi Ide, Hideyuki Nasu, Fumio Koyama
2025	—	`conf`	DSP-free 500-meter Single-mode Fiber Transmission with Record High Bandwidth 1060nm Intra-cavity Metal-aperture Coupled-cavity VCSEL. OFC Hameeda R. Ibrahim, Ahmed Hassan, Chang Ge, Xiaodong Gu, Fumio Koyama
2025	—	`conf`	High-Speed 200 Gbps 1 060 nm Single-Mode Coupled-Cavity VCSEL Enabling 30 m OM4 Multimode Fiber Links. ECOC Hameeda R. Ibrahim, Chang Ge, Ahmed M. A. Hassan, Xiaodong Gu, Fumio Koyama
2024	J	`jnl`	Enhanced high-frequency modulation of single-mode 850nm VCSELs via dual transverse-cavity integration. IEICE Electron. Express Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiaodong Gu, Moustafa Ahmed, Fumio Koyama
2024	—	`conf`	High Bandwidth (>35GHz) 1060nm Single-mode Transverse Coupled-cavity VCSEL Array for Single-mode Fiber Transmission. OFC Hameeda R. Ibrahim, Chang Ge, Xiaodong Gu, Babu D. Padullaparthi, Fumio Koyama
2024	—	`conf`	SM-TCC-VCSEL-based 800 Gbps Linear Drive Pluggable Transceiver. OFC Yamato Iwama, Takatoshi Yagisawa, Satoshi Ide, Kazutaka Takeda, Chang Ge, Xiodong Gu, Fumio Koyama
2023	—	`conf`	16-ch 1060-nm Single-mode Bottom-emitting Metal-aperture VCSEL Array for Co-packaged Optics. OFC Liang Dong, Xiaodong Gu, Fumio Koyama
2023	—	`conf`	Full 3-inch Wafer Processed 1060 nm Single-mode Transverse Coupled-cavity VCSEL for Data Transmission in Standard 1300nm Single-mode Fiber. OFC Chang Ge, Boxuan Zhang, Xiaodong Gu, Susumu Kinoshita, Fumio Koyama
2022	—	`conf`	1060nm Single-mode Transverse Coupled Cavity VCSEL with Surface Relief Engineering for 80Gbps PAM4 Modulation. OFC Shanting Hu, Xiaodong Gu, Hameeda R. Ibrahim, Masanori Nakahama, Satoshi Shinada, Fumio Koyama
2021	—	`conf`	1060nm Single-mode Metal-aperture VCSEL Array with Transverse Resonance and Low Power Consumption below 50 fJ/bit. ECOC Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiodong Gu, Satoshi Shinada, Moustafa Ahmed, Fumio Koyama
2021	—	`conf`	1060nm single-mode metal aperture VCSEL array with transverse resonance for 5km single-mode fiber transmission. OFC Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiodong Gu, Satoshi Shinada, Moustafa Ahmed, Fumio Koyama
2021	—	`conf`	Compact 1D/2D VCSEL Beam Scanner with Enhanced Field of View and High Resolution. ECOC Ruixiao Li, Xiaodong Gu, Satoshi Shinada, Fumio Koyama
2021	J	`jnl`	Coupled mode analysis of high-speed transverse coupled cavity vertical-cavity surface-emitting laser for low frequency chirp operations. IEICE Electron. Express Shanting Hu, Fumio Koyama
2021	—	`conf`	Recent progress of VCSEL Photonics and their applications. ECOC Fumio Koyama
2021	—	`conf`	Record High Power Single-mode Operation and Beam Steering of VCSEL-Integrated Amplifier/Beam Scanner. OFC Shanting Hu, Xiaodong Gu, Ahmed M. A. Hassan, Masanori Nakahama, Satoshi Shinada, Fumio Koyama
2021	—	`conf`	Solid-state VCSEL beam scanner with ultra-large field of view and high resolution. OFC Ruixiao Li, Zeuku Ho, Xiaodong Gu, Satoshi Shinada, Fumio Koyama
2021	J	`jnl`	Static and dynamic characteristics of double transverse coupled cavity VCSELs for high speed modulations. IEICE Electron. Express Hameeda R. Ibrahim, Ahmed M. A. Hassan, Xiaodong Gu, Moustafa Ahmed, Fumio Koyama
2021	J	`jnl`	Surface grating loaded VCSEL with single mode power of over 80 mW. IEICE Electron. Express Shanting Hu, Ahmed Hassan, Xiaodong Gu, Masanori Nakahama, Fumio Koyama
2020	—	`conf`	Enhanced-Field-of-View Solid-State VCSEL Beam Scanner with Lateral Resolution Points of More than 1200. ECOC Ruixiao Li, Zeuku Ho, Xiaodong Gu, Fumio Koyama
2020	J	`jnl`	Lateral integration of VCSEL and amplifier with resonant wavelength detuning design. IEICE Electron. Express Shanting Hu, Masashi Takanohashi, Xiaodong Gu, Akihiro Matsutani, Fumio Koyama
2020	—	`conf`	Net 321.24-Gb/s IMDD Transmission Based on a >100-GHz Bandwidth Directly-Modulated Laser. OFC 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
2020	—	`conf`	Real-Time Structured-Light Depth Sensing Based on Ultra-Compact, Non-Mechanical VCSEL Beam Scanner. OFC Ruixiao Li, Masashi Takanohashi, Shanting Hu, Xiaodong Gu, Fumio Koyama
2020	—	`conf`	Single-mode and High-speed Intracavity Metal Aperture VCSEL with Transverse Coupled Cavity Effect. ECOC Hameeda R. Ibrahim, Ahmed M. A. Hassan, Moustafa Ahmed, Fumio Koyama
2019	—	`conf`	Full C-Band Wavelength Demultiplexer with Optical Gain for Use in Wavelength Selective Switch. OFC Ryosuke Togashi, Xiaodong Gu, Takahiro Sakaguchi, Fumio Koyama
2019	—	`conf`	Two-Dimensional Beam Steering Device Based on VCSEL Slow-Light Waveguide Array with Amplifier Function. OFC Keisuke Kondo, Xiaodong Gu, Zeuku Ho, Akihiro Matsutani, Fumio Koyama
2018	—	`conf`	Active Bragg Reflector Waveguide Demultiplexer Array with Over 100 Wavelength Channels and Optical Gain for Large Port-count WSS. OFC Xiaodong Gu, Masanori Nakahama, Fumio Koyama
2015	—	`conf`	Energy efficient tunable light sources for next generation flexible access networks. OFC Fumio Koyama
2015	—	`conf`	Over 30 GHz modulation of 850 nm transverse coupled cavity vertical-cavity surface-emitting laser. ECOC Xiaodong Gu, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama
2014	—	`conf`	60-Channel wavelength selective switch on Bragg reflector waveguides array with 125 output-ports. ECOC Xiaodong Gu, Kazunori Seno, Hiromasa Tanobe, Fumio Koyama
2014	—	`conf`	Compact wavelength selective switch based on high-density Bragg reflector waveguide array with 120 output ports. OFC Xiaodong Gu, Fumio Koyama
2014	—	`conf`	High-speed compact electro-absorption modulator laterally integrated with VCSEL. ECOC Hamed Dalir, Yuta Takahashi, Fumio Koyama
2014	—	`conf`	Low driving voltage (< 400mVpp) electro-absorption modulator laterally integrated with VCSEL. OFC Hamed Dalir, Yuta Takahashi, Fumio Koyama
2013	J	`jnl`	Compact beam deflector based on slow-light Bragg reflector waveguide monolithically integrated with VCSEL. IEICE Electron. Express Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama
2012	J	`jnl`	Electro-thermal tuning of MEMS VCSEL with giant wavelength-temperature dependence. IEICE Electron. Express Masanori Nakahama, Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama
2012	J	`jnl`	Lateral integration of MEMS VCSEL and slow light amplifier boosting single mode power. IEICE Electron. Express Masanori Nakahama, Toshikazu Shimada, Fumio Koyama
2012	J	`jnl`	Wavelength Trimming of Micro-Machined VCSELs. IEICE Trans. Electron. Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama
2011	J	`jnl`	Bandwidth enhancement of single-mode VCSEL with lateral optical feedback of slow light. IEICE Electron. Express Hamed Dalir, Fumio Koyama
2011	J	`jnl`	Spatial mode multiplexer/demultiplexer based on tapered hollow waveguide. IEICE Electron. Express Hamed Dalir, Yasushi Yokota, Fumio Koyama
2009	J	`jnl`	Proposal of gain-matched VCSELs with a thermally actuated MEMS structure for wide temperature operations. IEICE Electron. Express Hayato Sano, Fumio Koyama
2009	J	`jnl`	VCSEL photonics. IEICE Electron. Express Fumio Koyama
2008	J	`jnl`	Beam steering and tilt coupling in tunable hollow waveguide. IEICE Electron. Express Akihiro Imamura, Fumio Koyama
2008	J	`jnl`	High speed response of nonlinear optical phase-shifter based on vertical micro-cavity saturable absorber. IEICE Electron. Express Satoshi Suda, Fumio Koyama, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah
2008	J	`jnl`	Modeling and experiment on tapered hollow waveguide multiplexer for multi- wavelength VCSEL array. IEICE Electron. Express Akihiro Imamura, Naoto Kitabayashi, Fumio Koyama
2008	J	`jnl`	Proposal of total-internal-reflection optical switch with slowing light in Bragg reflector waveguide. IEICE Electron. Express Ayumi Fuchida, Fumio Koyama
2007	J	`jnl`	12th Optoelectronics and Communications Conference (OECC) and 16th International Conference on Integrated Optics and Optical Fiber Communication (IOOC 2007). IEEE Commun. Mag. Hideo Kuwahara, Fumio Koyama, Tetsuya Miki
2005	J	`jnl`	All-optical regenerator with re-polarization function based on dual optical injection VCSEL. IEICE Electron. Express Koichi Hasebe, Yutaka Onishi, Fumio Koyama
2005	J	`jnl`	Joint Special Section on Recent Progress in Optoelectronics and Communications. IEICE Trans. Commun. Ken-ichi Kitayama, Thas A. Nirmalathas, Kimio Oguchi, Fumio Koyama
2005	J	`jnl`	Joint Special Section on Recent Progress in Optoelectronics and Communications. IEICE Trans. Electron. Ken-ichi Kitayama, Thas A. Nirmalathas, Kimio Oguchi, Fumio Koyama
2005	J	`jnl`	Novel polarization controller based on injection-locked vertical-cavity surface-emitting laser. IEICE Electron. Express Koichi Hasebe, Yutaka Onishi, Fumio Koyama
2004	J	`jnl`	Enhanced modulation bandwidth of surface-emitting laser with external optical feedback. IEICE Electron. Express Tomoaki Ota, Takeshi Uchida, Takashi Kondo, Fumio Koyama
2004	J	`jnl`	Fabrication and characterization of hollow waveguide distributed bragg reflectors. IEICE Electron. Express Yasuki Sakurai, Akihiro Matsutani, Fumio Koyama
2004	J	`jnl`	Metal-aperture surface emitting laser with nano metal particle for near-field optics. IEICE Electron. Express Jiro Hashizume, Fumio Koyama
2004	J	`jnl`	Modeling of a low-loss spot-size converter for hollow waveguides with sub-wavelength air core. IEICE Electron. Express Yasuki Sakurai, Fumio Koyama
2004	J	`jnl`	Modeling of hollow waveguide optical switch with variable air core. IEICE Electron. Express Chang-Hwan Bae, Fumio Koyama
2004	J	`jnl`	Spot-size and incident angle dependence of filtering characteristics of narrow pass-band dielectric multilayer filters. IEICE Electron. Express Satoshi Suda, Fumio Koyama
2004	J	`jnl`	Thermal cross-talk evaluation of densely integrated vertical cavity surface emitting laser array. IEICE Electron. Express Yasuhiro Uchiyama, Takashi Kondo, Kazutaka Takeda, Akihiro Matsutani, Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama