Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
OCS, LQE, OPE |
2023-10-19 14:15 |
Kochi |
(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.) OCS2023-32 OPE2023-87 LQE2023-34 |
Recent demands for high-speed data communications and photonic computing have been increasing significance of ultra-wide... [more] |
OCS2023-32 OPE2023-87 LQE2023-34 pp.28-31 |
OPE, OCS, LQE |
2022-10-21 16:00 |
Ehime |
(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 pp.116-119 |
OPE, LQE |
2020-11-20 15:30 |
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 pp.129-132 |
LQE, OPE, CPM, EMD, R |
2019-08-23 09:40 |
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 pp.47-50 |
MWP |
2019-05-22 14:30 |
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 pp.1-4 |
OPE, LQE, OCS |
2018-10-18 15:25 |
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 pp.47-50 |
LQE, LSJ |
2018-05-25 13:00 |
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 pp.21-24 |
EMT, EST, LQE, MWP, OPE, PEM, PN, IEE-EMT [detail] |
2018-01-25 13:00 |
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 pp.111-114 |
LQE |
2017-12-15 10:10 |
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 pp.1-4 |
OCS, OPE, LQE |
2017-10-27 13:55 |
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 pp.93-96 |
ICTSSL |
2017-05-30 10:25 |
Miyagi |
NEXCO EAST TOHOKU |
Multiagent-based Evacuation Guidance Support System for Coastal Area Hideyuki Takahashi, Kenta Katayama, Nobuhide Yokota, Kazuya Sugiyasu, Tetsuo Kinoshita (Tohoku Univ.) ICTSSL2017-8 |
It is difficult for us to deal with an unexpected natural disaster (e.g., earthquake, tsunami, torrential rain) which is... [more] |
ICTSSL2017-8 pp.35-39 |
OPE, EST, LQE, EMT, PN, MWP, IEE-EMT [detail] |
2017-01-19 09:30 |
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 pp.127-130 |
OPE, LQE |
2016-06-17 14:15 |
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 pp.25-30 |
OPE, LQE |
2016-06-17 15:05 |
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 pp.35-39 |
OPE, LQE, OCS |
2015-10-30 15:50 |
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 pp.137-140 |
CPM, OPE, LQE, R, EMD |
2015-08-28 10:00 |
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 pp.77-80 |
LQE, LSJ |
2015-05-21 13:45 |
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 pp.7-12 |
OPE, LQE |
2014-12-19 15:40 |
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 pp.47-50 |
PN, EMT, LQE, OPE, MWP, EST, IEE-EMT [detail] |
2013-01-24 09:00 |
Osaka |
Osaka Univ. (Suita) |
Analysis of Optical Output Characteristics in Waveguide Coupled HCG VCSELs Yoshihiro Tsunemi, Nobuhide Yokota, Kazuhiro Ikeda, Hitoshi Kawaguchi (NAIST) PN2012-37 OPE2012-146 LQE2012-138 EST2012-73 MWP2012-55 |
We analyze optical output characteristics in optical waveguide coupled high-index-contrast subwavelength grating VCSELs ... [more] |
PN2012-37 OPE2012-146 LQE2012-138 EST2012-73 MWP2012-55 pp.19-24 |