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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 23  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
OCS, LQE, OPE 2023-10-19
(Primary: On-site, Secondary: Online)
Evaluation of Intrinsic Modulation Response of Semiconductor Lasers with Wide Bandwidth and High Sensitivity Using Optical Modulation and Optical Spectrum Detection
Nobuhide Yokota, Tomoharu Nohara, Hiroshi Yasaka (Tohoku Univ.)
(To be available after the conference date) [more]
OPE, OCS, LQE 2022-10-21
(Primary: On-site, Secondary: Online)
Analysis of High-Speed Operation of Hybrid Modulation Semiconductor Lasers Using Coupled-Wave Equations
Shoki Asami, Kaori Uchiyama, Nobuhide Yokota, Hiroshi Yasaka (Tohoku Univ.) OCS2022-39 OPE2022-85 LQE2022-48
High-speed semiconductor lasers are being required to cope with the explosive increase of the traffic in data centers. T... [more] OCS2022-39 OPE2022-85 LQE2022-48
PN 2021-03-01
Online Online [Invited Talk] R&D on high-capacity multi-core fiber transmission systems
Itsuro Morita, Daiki Soma, Takehiro Tsuritani (KDDI Research), Masato Yoshida, Hiroshi Yasaka (Tohoku Univ), Takemi Hasegawa, Tetsuya Hayashi (Sumitomo Electric), Shigehiro Takasaka, Koichi Maeda, Ryuichi Sugizaki (Furukawa Electric), Takanori Inoue, Hitoshi Takeshita (NEC), Taketoshi Takahata, Tetsuya Kobayashi (OPTOQUEST) PN2020-46
The capacity of optical submarine cable systems has been drastically increased by introducing various innovative technol... [more] PN2020-46
OPE, LQE 2020-11-20
Online Online Spectral linewidth reduction of hybrid tunable laser by loading optical negative feedback circuit
Tatsuki Komatsubara, Toshiaki Okachi (Waseda Univ.), Nobuhide Yokota, Hiroshi Yasaka (Tohoku Univ.), Tomohiro Kita (Waseda Univ.) OPE2020-71 LQE2020-51
Spectral linewidth of a hybrid tunable laser consisted from SOA and Si optical circuits is reduced by loading an optical... [more] OPE2020-71 LQE2020-51
LQE, OPE, CPM, EMD, R 2019-08-23
Miyagi   [Invited Talk] High Function Semiconductor Lasers for Next Generation Optical Communication Systems
Hiroshi Yasaka, Nobuhide Yokota, Kanno Mitsunari, Sato Shouta (Tohoku Univ.) R2019-29 EMD2019-27 CPM2019-28 OPE2019-56 LQE2019-34
Compact narrow linewidth semiconductor laser source is proposed and demonstrated by utilizing optical negative feedback ... [more] R2019-29 EMD2019-27 CPM2019-28 OPE2019-56 LQE2019-34
MWP 2019-05-22
Tokyo Kikai-Shinko-Kaikan Bldg. [Invited Talk] Spin-Controlled Vertical-Cavity Surface-Emitting Lasers for Low-Power and High-Speed Data Communication
Nobuhide Yokota, Kunpei Nisaka (Tohoku Univ.), Kazuhiro Ikeda (AIST), Hiroshi Yasaka (Tohoku Univ.) MWP2019-1
A low-power and high-speed data communication is required to support a development of IoT technologies. For drastically ... [more] MWP2019-1
OPE, LQE, OCS 2018-10-18
Saga   Characteristics of Spin Polarization Modulation in VCSELs for High-Speed Operation
Nobuhide Yokota, Kunpei Nisaka (Tohoku Univ.), Kazuhiro Ikeda (AIST), Hiroshi Yasaka (Tohoku Univ.) OCS2018-36 OPE2018-72 LQE2018-61
High-speed vertical-cavity surface-emitting lasers (VCSELs) with low cost and low energy consumption are required to cop... [more] OCS2018-36 OPE2018-72 LQE2018-61
LQE, LSJ 2018-05-25
Fukui   Chirp Characteristic of Hybrid Modulation Laser under High Speed Modulation
Mitsunari Kanno, Shigeru Mieda, Nobuhide Yokota (Tohoku Univ.), Hiroyuki Ishii (NTT), Hiroshi Yasaka (Tohoku Univ.) LQE2018-15
 [more] LQE2018-15
EMT, EST, LQE, MWP, OPE, PEM, PN, IEE-EMT [detail] 2018-01-25
Hyogo   Coherent optical negative feedback narrow linewidth semiconductor laser integrated with Si ring filter
Konosuke Aoyama, Nobuhide Yokota, Hiroshi Yasaka, Tomohiro Kita (Tohoku Univ.) PN2017-58 EMT2017-95 OPE2017-136 LQE2017-118 EST2017-94 MWP2017-71
To achieve a monolithic coherent optical negative feedback narrow linewidth laser source, we design and fabricate a Si w... [more] PN2017-58 EMT2017-95 OPE2017-136 LQE2017-118 EST2017-94 MWP2017-71
LQE 2017-12-15
Tokyo   [Encouragement Talk] Hybrid modulation scheme for modulation characteristics control of distributed feedback laser
Shigeru Mieda, Nobuhide Yokota (Tohoku Univ), Wataru Kobayashi (NTT), Hiroshi Yasaka (Tohoku Univ) LQE2017-85
 [more] LQE2017-85
OCS, OPE, LQE 2017-10-27
Kumamoto Josaien, Sakuranobaba Coded Optical Nyquist Pulse Generation Using Modulated Semiconductor Lasers
Nobuhide Yokota, Kazuya Komukai, Hiroshi Yasaka (Tohoku Univ.) OCS2017-54 OPE2017-86 LQE2017-59
Coded optical Nyquist pulse generation using modulated semiconductor lasers and dual-electrode Mach-Zehnder modulator (M... [more] OCS2017-54 OPE2017-86 LQE2017-59
OPE, EST, LQE, EMT, PN, MWP, IEE-EMT [detail] 2017-01-19
Mie Iseshi Kanko Bunka Kaikan Effect of birefringence on lasing circular polarization in spin-controlled vertical-cavity surface-emitting lasers
Nobuhide Yokota, Ryutaro Takeuchi, Hiroshi Yasaka (Tohoku Univ.), Kazuhiro Ikeda (AIST) PN2016-63 EMT2016-92 OPE2016-138 LQE2016-127 EST2016-102 MWP2016-76
We investigate circular polarization characteristics in vertical-cavity surface-emitting lasers (VCSELs) with InAlGaAs q... [more] PN2016-63 EMT2016-92 OPE2016-138 LQE2016-127 EST2016-102 MWP2016-76
OPE, LQE 2016-06-17
Tokyo   [Invited Talk] Phase noise reduction of single mode semiconductor laser by optical negative feedback
Hiroshi Yasaka, Konosuke Aoyama, Nobuhide Yokota (Tohoku Univ.) OPE2016-14 LQE2016-24
半導体レーザのスペクトル線幅および位相ノイズを低減する手法として光負帰還法を提案し,スペクトル線幅および位相ノイズの低減効果を考察した.本手法は,原理的にはレーザ外部に光周波数弁別器としての光フィルタを設置するのみで構成可能なため,小型な狭... [more] OPE2016-14 LQE2016-24
OPE, LQE 2016-06-17
Tokyo   Modulation Characteristics Control of Distributed Feedback Laser with Intra-cavity Loss Modulation
Shigeru Mieda, Nobuhide Yokota (Tohoku Univ.), Wataru Kobayashi (NTT), Hiroshi Yasaka (Tohoku Univ.) OPE2016-16 LQE2016-26
 [more] OPE2016-16 LQE2016-26
OPE, LQE, OCS 2015-10-30
Oita Beppu International Convention Center Flat optical frequency comb generated by semiconductor Mach-Zehnder modulator assisted by nonlinear phase modulation
Nobuhide Yokota, Koichiro Abe, Hiroshi Yasaka (Tohoku Univ.) OCS2015-68 OPE2015-118 LQE2015-87
Optical frequency combs generated by an InP-based semiconductor Mach-Zehnder modulator (MZM) is numerically investigated... [more] OCS2015-68 OPE2015-118 LQE2015-87
CPM, OPE, LQE, R, EMD 2015-08-28
Aomori Aomori-Bussankan-Asupamu Bandwidth Enhancement of Semiconductor Lasers by Intra-cavity Loss Modulation
Shigeru Mieda, Nobuhide Yokota (Tohoku Univ.), Wataru Kobayashi (NTT), Hiroshi Yasaka (Tohoku Univ.) R2015-38 EMD2015-46 CPM2015-62 OPE2015-77 LQE2015-46
 [more] R2015-38 EMD2015-46 CPM2015-62 OPE2015-77 LQE2015-46
LQE, LSJ 2015-05-21
Ishikawa   Ultra-Compact Narrow Linewidth Laser Source with Optical Negative Feedback
Konosuke Aoyama, Shuhei Kobayashi, Nobuhide Yokota, Hiroshi Yasaka (Tohoku Univ.) LQE2015-2
We propose and demonstrate an ultra-compact narrow linewidth laser source by applying a coherent optical negative feedba... [more] LQE2015-2
OPE, LQE 2014-12-19
Tokyo Kikai-Shinko-Kaikan, NTT Atsugi R&D center High-speed Operation of Optically Controlled Cross-gain-modulation Laser with External Cavity
Shigeru Mieda, Satoshi Shiratori, Nobuhide Yokota (Tohoku Univ.), Wataru Kobayashi (NTT), Hiroshi Yasaka (Tohoku Univ.) OPE2014-148 LQE2014-135
An optically controlled laser diode with an optical loss and phase controllable external cavity was discussed to achieve... [more] OPE2014-148 LQE2014-135
MWP 2012-04-06
Tokyo Kikai-Shinko-Kaikan Bldg. [Invited Talk] InP Optical Modulators
Hiroshi Yasaka (Tohoku Univ.) MWP2012-4
Semiconductor-based optical modulators are particularly promising for applications in photonic network systems owing to ... [more] MWP2012-4
OCS, LQE, OPE 2008-10-23
Fukuoka Kyushu Univ. 10-Gbit/s InP n-p-i-n Mach-Zehnder Modulator Monolithically Integrated with SOA
Takako Yasui, Yasuo Shibata, Ken Tsuzuki, Nobuhiro Kikuchi, Masakazu Arai, Yoshihiro Kawaguchi (NTT), Hiroshi Yasaka (Tohoku Univ.) OCS2008-47 OPE2008-90 LQE2008-59
An InP n-p-i-n Mach-Zehnder modulator and a semiconductor optical amplifier were monolithically integrated to compensate... [more] OCS2008-47 OPE2008-90 LQE2008-59
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