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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 22  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
PN 2022-11-07
14:35
Kochi
(Primary: On-site, Secondary: Online)
[Invited Talk] Spot size converter having two stories employing anisotropic etching process
Hajime Tanaka (SEI), Ryuji Yamabi (SEDI), Takamitsu Kitamura (SEDI/SEI), Hotino Kazuhiko (SEDI), Ishikawa Tsutomu, Watanabe Masataka (SEI), Mitsuru Ekawa (SEDI/SEI)
 [more]
R, LQE, OPE, CPM, EMD 2020-08-28
13:55
Online Online [Invited Talk] InP-based Waveguide Photodetectors for IMDD/Coherent Transmission Applications
Yoshihiro Yoneda, Takuya Okimoto (SEI), Ken Ashizawa, Koji Ebihara, Satoru Okamoto, Kazuhiko Horino (SEDI), Hideki Yagi, Mitsuru Ekawa (SEI) R2020-13 EMD2020-12 CPM2020-5 OPE2020-25 LQE2020-5
Optical receivers for 400 Gb/s and beyond optical communication systems have been required modulation speeds higher than... [more] R2020-13 EMD2020-12 CPM2020-5 OPE2020-25 LQE2020-5
pp.21-24
LQE, OPE, SIPH 2018-12-06
10:15
Tokyo Keio University [Encouragement Talk] Wide bandwidth and high responsivity of InP-based waveguide photodiodes for over 400 Gbps coherent transmission systems
Takuya Okimoto (SEDI), Hideki Yagi (SEI), Ryuji Masuyama, Kenji Sakurai, Yoshifumi Nishimoto, Kazuhiko Horino, Takayuki Watanabe (SEDI), Mitsuru Ekawa (SEI), Yoshihiro Yoneda (SEDI) OPE2018-97 LQE2018-107 SIPH2018-13
For high speed coherent transmission system over 400 Gbps, photodetectors for coherent receivers with both the wide band... [more] OPE2018-97 LQE2018-107 SIPH2018-13
pp.1-5
EMD, LQE, OPE, CPM, R 2018-08-24
10:50
Hokkaido Otaru Camber of Commerce & Industry Compact and low power consumption mid-IR quantum cascade laser development and gas sensing application
Makoto Murata, Hiroyuki Yoshinaga, Masaki Migita, Hiroki Mori, Yukihiro Tsuji, Takashi Kato, Jun-ichi Hashimoto, Mitsuru Ekawa, Yasuhiro Iguchi, Tsukuru Katsuyama (Sumitomo Electric) R2018-27 EMD2018-30 CPM2018-30 OPE2018-57 LQE2018-46
Mid-infrared sensing with a quantum cascade laser (QCL) as a light source is expected to offer high sensitivity, short m... [more] R2018-27 EMD2018-30 CPM2018-30 OPE2018-57 LQE2018-46
pp.53-56
R, EMD, CPM, LQE, OPE 2017-09-01
15:00
Aomori   Wide Bandwidth and High Responsivity Operation of InP-based Photodetector Monolithically Integrated with 90° Hybrid to Realize Over 400 Gbps Coherent Transmission Systems
Takuya Okimoto (SEDI), Hideki Yagi (SEI), Ryuji Masuyama, Kenji Sakurai, Yoshifumi Nishimoto, Kazuhiko Horino, Takayuki Watanabe (SEDI), Mitsuru Ekawa (SEI), Yoshihiro Yoneda (SEDI) R2017-40 EMD2017-34 CPM2017-55 OPE2017-64 LQE2017-37
In order to realize over 400 Gbps coherent transmission systems, wide bandwidth and high responsivity operation of integ... [more] R2017-40 EMD2017-34 CPM2017-55 OPE2017-64 LQE2017-37
pp.73-76
LQE, OPE, EMD, R, CPM 2016-08-26
13:45
Hokkaido   Small Responsivity Imbalance of InP-Based Photodetector Monolithically Integrated with 90°Hybrid for Compact Coherent Receivers
Hideki Yagi (SEI), Takuya Okimoto, Ryuji Masuyama, Kenji Sakurai, Yoshifumi Nishimoto (Sumitomo Electric Device Innovations), Takehiko Kikuchi (SEI), Kazuhiko Horino, Takayuki Watanabe (Sumitomo Electric Device Innovations), Mitsuru Ekawa, Masaru Takechi (SEI), Yoshihiro Yoneda (Sumitomo Electric Device Innovations) R2016-40 EMD2016-44 CPM2016-53 OPE2016-74 LQE2016-49
Since compact and low power dissipation coherent transceivers for metro-networks involve a miniaturization and low costs... [more] R2016-40 EMD2016-44 CPM2016-53 OPE2016-74 LQE2016-49
pp.105-108
OPE, LQE 2016-06-17
15:30
Tokyo   Mid-infrared quantum cascade laser (QCL) integrated with distributed Bragg reflector (DBR)
Jun-ichi Hashimoto, Hiroyuki Yoshinaga, Hiroki Mori, Yukihiro Tsuji, Manabu Shiozaki, Makoto Murata, Mitsuru Ekawa, Yashuhiro Iguchi, Tsukuru Katsuyama (SUMITOMO ELECTRIC) OPE2016-17 LQE2016-27
We developed an InP-based FP-QCL integrated with a distributed Bragg reflector (DBR) at the end of the cavity. The DBR c... [more] OPE2016-17 LQE2016-27
pp.41-46
OPE, LQE 2014-12-19
15:15
Tokyo Kikai-Shinko-Kaikan, NTT Atsugi R&D center Low Power-consumption Distributed Feedback Quantum Cascade Laser (DFB-QCL) at λ=7μm
Jun-ichi Hashimoto, Hiroyuki Yoshinaga, Hiroki Mori, Yukihiro Tsuji, Makoto Murata, Mitsuru Ekawa, Toshiyuki Tanahashi, Tsukuru Katsuyama (Sumitomo Electric) OPE2014-147 LQE2014-134
We developed a low power-consumption DFB-QCL atλ=7μm used for gas-sensors. For power-consumption reduction, we introduce... [more] OPE2014-147 LQE2014-134
pp.41-46
LQE, LSJ 2014-05-22
14:25
Fukui   Simultaneous 43-Gb/s Direct Modulation and 10-km SMF Transmission of 1.3-μm AlGaInAs MQW Distributed-Reflector Laser Arrays at 50℃
Manabu Matsuda, Ayahito Uetake, Takasi Simoyama, Shigekazu Okumura, Kazumasa Takabayashi, Mitsuru Ekawa, Tsuyoshi Yamamoto (Fujitsu Labs.) LQE2014-3
43-Gb/s direct modulation of 1.3-μm wavelength AlGaInAs distributed-reflector laser arrays on semi-insulating InP substr... [more] LQE2014-3
pp.9-13
LQE 2012-12-13
11:00
Tokyo Kikai-Shinko-Kaikan Bldg. Ultra-high-speed direct modulation of AlGaInAs semi-insulating buried-heterostructure distributed-reflector lasers
Takasi Simoyama, Manabu Matsuda, Shigekazu Okumura, Ayahito Uetake, Mitsuru Ekawa, Tsuyoshi Yamamoto (Fujitsu Labs.) LQE2012-124
AlGaInAs-MQW distributed reflector (DR) laser with semi-insulating buried-heterostructure (SI-BH) has been developed as ... [more] LQE2012-124
pp.15-18
ED, LQE, CPM 2012-11-30
15:35
Osaka Osaka City University Fabrication of radial InP/InAsP quantum wells on InP nanowires for near-infrared optical devices
Kenichi Kawaguchi, Yoshiaki Nakata, Mitsuru Ekawa, Tsuyoshi Yamamoto (Fujitsu Lab.), Yasuhiko Arakawa (Univ. of Tokyo) ED2012-88 CPM2012-145 LQE2012-116
InP-based nanowire (NW) heterostructures have attracted attentions as a building block for fabricating nano-scale light ... [more] ED2012-88 CPM2012-145 LQE2012-116
pp.109-112
IA 2012-02-23
16:25
Tokyo Kikai-Shinko-Kaikan Bldg. Ultra-fast LAN-SAN system technologies for ultra-high definition video and their enabling technologies
Shu Namiki (AIST), Hiroshi Onaka, Satoshi Ide (Fujitsu), Masahito Tomizawa (NTT), Hiroshi Ishikawa (AIST), Yu Tanaka (Fujitsu), Hiroshi Aruga (Mitsubishi Electric), Mitsuru Ekawa (Fujitsu), Takayuki Kurosu (AIST), Kimiyuki Oyamada (NHK), Yasuhiko Arakawa, Tohru Asami (UTYO) IA2011-70
 [more] IA2011-70
pp.29-33
LQE 2010-12-17
13:10
Tokyo Kikai-Shinko-Kaikan Bldg. [Encouragement Talk] AlGaInAs semi-insulating buried-heterostructure (SI-BH) distributed-reflector (DR) lasers for low-driving-current 40-Gbps direct modulation
Ayahito Uetake, Koji Otsubo, Manabu Matsuda (PETRA/Fujitsu/Fujitsu labs.), Shigekazu Okumura (Fujitsu labs.), Mitsuru Ekawa, Tsuyoshi Yamamoto (PETRA/Fujitsu/Fujitsu labs.) LQE2010-120
Because of recent significant increase of data traffic, much attention has been paid to high-speed optical transmitters.... [more] LQE2010-120
pp.27-32
EMD, OPE, LQE, CPM 2010-08-27
17:20
Hokkaido Chitose Arcadia Plaza Improved performances of 1.3-um InAs/GaAs high-density quantum dot lasers
Yu Tanaka (Fujitsu labs./Fujitsu/QD laser/PETRA), Kan Takada, Mitsuru Ishida (NanoQuine, Tokyo univ.), Takeshi Matsumoto, Hai-Zhi Song, Mitsuru Ekawa (Fujitsu Labs), Yoshiaki Nakata (Fujitsu Labs/QD laser), Tsuyoshi Yamamoto (Fujitsu labs/Fujitsu/PETRA), Masaomi Yamaguchi, Kenichi Nishi, Mitsuru Sugawara (QD laser), Yasuhiko Arakawa (IIS, Tokyo univ.) EMD2010-60 CPM2010-76 OPE2010-85 LQE2010-58
 [more] EMD2010-60 CPM2010-76 OPE2010-85 LQE2010-58
pp.157-162
OPE, EMT, LQE, PN, IEE-EMT 2010-01-29
16:15
Kyoto   High power, large-dynamic-range output level control with heater-mounted SOA
Shinsuke Tanaka, Ayahito Uetake, Susumu Yamazaki, Mitsuru Ekawa, Ken Morito (Fujitsu Labs.) PN2009-63 OPE2009-201 LQE2009-183
A semiconductor optical amplifier (SOA) is very promising as a compact amplifier used in photonic networks. However, in ... [more] PN2009-63 OPE2009-201 LQE2009-183
pp.149-154
LQE 2009-12-11
14:40
Tokyo Kikai-Shinko-Kaikan Bldg. AlGaInAs semi-insulating buried-heterostructure (SI-BH) distributed-reflector (DR) lasers for low-driving-current 40-Gbps direct modulation
Ayahito Uetake, Koji Otsubo, Manabu Matsuda (OITDA/Fujitsu/Fujitsu Laboratories), Shigekazu Okumura (Fujitsu Laboratories), Mitsuru Ekawa, Tsuyoshi Yamamoto (OITDA/Fujitsu/Fujitsu Laboratories) LQE2009-148
Because of recent significant increase of data traffic, much attention has been paid to high-speed optical transmitters.... [more] LQE2009-148
pp.51-56
LQE, OPE 2009-06-19
17:10
Tokyo Kikai-Shinko-Kaikan Bldg. 1.3 um InAs/GaAs quantum dot lasers -- Toward single mode lasing and high speed modulatoin --
Yu Tanaka (Fujitsu Labs/Fujitsu Ltd/QDL/OITDA), Kan Takada, Mitsuru Ishida (Univ. of Tokyo.), Yasunari Maeda (QD laser inc.), Takeshi Matsumoto, Mitsuru Ekawa, Hai-Zhi Song (Futjitsu Labs.), Masaomi Yamaguchi (QD laser inc.), Yoshiaki Nakata (Fujitsu Labs/QDL.), Kenichi Nishi (QD laser inc.), Tsuyoshi Yamamoto (Fujitsu Labs/Fujitsu Ltd/OITDA), Mitsuru Sugawara (Fujitsu Labs/Fujitsu Ltd/QDL/OITDA), Yasuhiko Arakawa (Univ. of Tokyo.) OPE2009-29 LQE2009-32
 [more] OPE2009-29 LQE2009-32
pp.67-72
LQE 2008-12-12
16:00
Tokyo Kikai-Shinko-Kaikan Bldg. High Speed Direct Modulation of 1.3-μm AlGaInAs Multiple-Quantum-Well DFB Lasers with Semi-Insulating Current-Blocking Layers
Koji Otsubo, Manabu Matsuda, Kan Takada, Shigekazu Okumura, Mitsuru Ekawa (Fujitsu Labs. Ltd.), Hiromasa Tanaka (Fujitsu Ltd.), Satoshi Ide (Fujitsu Labs. Ltd.), Kazuyuki Mori (Fujitsu Ltd.), Tsuyoshi Yamamoto (Fujitsu Labs. Ltd.) LQE2008-140
 [more] LQE2008-140
pp.63-68
LQE 2007-12-07
10:30
Tokyo Kikai-Shinko-Kaikan Bldg. High-Power 10-Gb/s Semi-Cooled Operation of AlGaInAs Electroabsorption Modulator Integrated λ/4-Shifted DFB Laser
Kan Takada, Suguru Akiyama, Manabu Matsuda, Shigekazu Okumura, Mitsuru Ekawa, Tsuyoshi Yamamoto (Fujitsu Lab.) LQE2007-114
High-power 10-Gb/s semi-cooled operation was attained for AlGaInAs electroabsorption modulator integrated AlGaInAs $\lam... [more] LQE2007-114
pp.7-10
LQE, OPE, OCS 2007-11-01
16:40
Fukuoka   Wavelength tunable EML using TDA-DFB laser
Shigeaki Sekiguchi, Kazumasa Takabayashi, Akinori Hayakawa, Shuichi Tomabechi, Ayahito Uetake, Mitsuru Ekawa, Haruhiko Kuwatsuka (Fujitsu Labs.) OCS2007-53 OPE2007-108 LQE2007-94
In this work, we report on a compact wavelength-tunable transmitter based on a tunable distributed amplification DFB (TD... [more] OCS2007-53 OPE2007-108 LQE2007-94
pp.61-64
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