Koichi Hasebe

17 papers A* 2Journal 4Unranked 11
YearRankTypeTitle / Venue / Authors
2018 — conf
A 137-mW, 4 ch × 25-Gbps Low-Power Compact Transmitter Flip-Chip-Bonded 1.3-μm LD-Array-on-Si.
OFC
Toshiki Kishi, Munehiko Nagatani, Shigeru Kanazawa, Shinsuke Nakano, Hiroaki Katsurai, Takuro Fujii, Hidetaka Nishi, Takaaki Kakitsuka, Koichi Hasebe, Kota Shikama, Yuko Kawajiri, Atsushi Aratake, Hideyuki Nosaka, Hiroshi Fukuda, Shinji Matsuo
2018 — conf
Lateral Current Injection Membrane Buried Heterostructure Lasers Integrated on 200-nm-thick Si Waveguide.
OFC
Takuma Aihara, Tatsurou Hiraki, Koji Takeda, Koichi Hasebe, Takuro Fujii, Tai Tsuchizawa, Takaaki Kakitsuka, Shinji Matsuo
2017 — conf
28-Gbit/s 80-km transmission using SOA-assisted extended-reach EADFB laser (AXEL).
OFC
Koichi Hasebe, Wataru Kobayashi, Naoki Fujiwara, Takahiko Shindo, Toshihide Yoshimatsu, Shigeru Kanazawa, Tetsuichiro Ohno, Hiroaki Sanjoh, Yoshitaka Ohiso, Hiroyuki Ishii, Yoshiaki Sone, Hideaki Matsuzaki
2017 — conf
32-Gbit/s Heterogeneously Integrated Mach-Zehnder Modulator with 250μm-long III-V/Si MOS-capacitor Phase Shifter.
ECOC
Tatsurou Hiraki, Takuma Aihara, Koichi Hasebe, Takuro Fujii, Koji Takeda, Takaaki Kakitsuka, Tai Tsuchizawa, Hiroshi Fukuda, Shinji Matsuo
2017 J jnl
Advantages of SOA Assisted Extended Reach EADFB Laser (AXEL) for Operation at Low Power and with Extended Transmission Reach.
IEICE Trans. Electron.
Wataru Kobayashi, Naoki Fujiwara, Takahiko Shindo, Yoshitaka Ohiso, Shigeru Kanazawa, Hiroyuki Ishii, Koichi Hasebe, Hideaki Matsuzaki, Mikitaka Itoh
2017 J jnl
Evaluation of Device Parameters for Membrane Lasers on Si Fabricated with Active-Layer Bonding Followed by Epitaxial Growth.
IEICE Trans. Electron.
Takuro Fujii, Koji Takeda, Erina Kanno, Koichi Hasebe, Hidetaka Nishi, Tsuyoshi Yamamoto, Takaaki Kakitsuka, Shinji Matsuo
2017 — conf
Heterogeneously integrated InP/Si metal-oxide-semiconductor capacitor Mach-Zehnder modulator.
OFC
Tatsurou Hiraki, Takuma Aihara, Koichi Hasebe, Takuro Fujii, Koji Takeda, Tai Tsuchizawa, Takaaki Kakitsuka, Hiroshi Fukuda, Shinji Matsuo
2015 — conf
Membrane distributed-reflector laser integrated with SiOx-based spot-size converter on Si platform.
ECOC
Hidetaka Nishi, Takuro Fujii, Koji Takeda, Koichi Hasebe, Takaaki Kakitsuka, Tai Tsuchizawa, Tsuyoshi Yamamoto, Koji Yamada, Shinji Matsuo
2014 — conf
25-Gbit/s direct modulation of photonic-crystal lasers with a 10.5-fJ/bit energy cost for on/off-chip optical interconnects.
ECOC
Koji Takeda, Tomonari Sato, Takuro Fujii, Akihiko Shinya, Eiichi Kuramochi, Masaya Notomi, Koichi Hasebe, Takaaki Kakitsuka, Shinji Matsuo
2014 — conf
40-Gbit/s EADFB laser integrated with short cavity SOA improving chirp characteristics with low power consumption.
ECOC
Wataru Kobayashi, M. Arai, Takeshi Fujisawa, Y. Shibata, Tomonari Sato, Toshio Ito, Koichi Hasebe, Takayuki Yamanaka, Hiroaki Sanjoh
2014 — conf
50-Gbit/s operation of lateral pin diode structure electro-absorption modulator integrated DFB laser.
ECOC
Koichi Hasebe, Tomonari Sato, Koji Takeda, Takuro Fujii, Takaaki Kakitsuka, Shinji Matsuo
2014 — conf
Ultralow operating energy of directly modulated DFB laser on SiO2/Si substrate.
ECOC
Shinji Matsuo, Takuro Fujii, Koichi Hasebe, Koji Takeda, Tomonari Sato, Takaaki Kakitsuka
2013 — conf
Integrated on-chip optical links using photonic-crystal lasers and photodetectors with current blocking trenches.
OFC/NFOEC
Koji Takeda, Tomonari Sato, Akihiko Shinya, Kengo Nozaki, Hideaki Taniyama, Masaya Notomi, Koichi Hasebe, Takaaki Kakitsuka, Shinji Matsuo
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
Novel polarization controller based on injection-locked vertical-cavity surface-emitting laser.
IEICE Electron. Express
Koichi Hasebe, Yutaka Onishi, Fumio Koyama
1993 A* conf
Toolkit for Shared Hypermedia on a Distributed Object Oriented Architecture.
ACM Multimedia
Rajiv Trehan, Nobuyuki Sawashima, Koji Yamaguchi, Koichi Hasebe
1988 A* conf
Experiences with an On-Line Translating Dialogue System.
ACL
Seiji Miike, Koichi Hasebe, Harold L. Somers, Shin'ya Amano