Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
OPE, OFT, OCS (Joint) [detail] |
2022-02-24 16:25 |
Online |
Online |
Expansion of optical phased array controlled only by wavelength sweep Yamato Misugi (Waseda Univ.), Hideaki Okayama (OKI), Tomohiro Kita (Waseda Univ.) OCS2021-42 OFT2021-74 OPE2021-54 |
Recently, there has been a great deal of interest in the development of sensing technologies for the realization of more... [more] |
OCS2021-42 OFT2021-74 OPE2021-54 pp.5-8(OCS), pp.23-26(OFT), pp.27-30(OPE) |
OPE, OFT, OCS (Joint) [detail] |
2022-02-24 16:50 |
Online |
Online |
Ultrafast operation of Si TO-switch by the differential control method Kohei Iino, Tomohiro Kita (Waseda Univ.) OCS2021-43 OFT2021-75 OPE2021-55 |
The current injection phase shifter structure using MMI enables high-speed temperature change by reducing the heat capac... [more] |
OCS2021-43 OFT2021-75 OPE2021-55 pp.9-14(OCS), pp.27-32(OFT), pp.31-36(OPE) |
OPE, OFT, OCS (Joint) [detail] |
2022-02-25 14:55 |
Online |
Online |
High Temperature Operation of 1.55μm Heterogeneous Wavelength Tunable Quantum Dot Laser Diode Kissho Iwanaga, Wataru Masuda (Waseda Univ.), Atsushi Matsumoto, Naokatsu Yamamoto (NICT), Tomohiro Kita (Waseda Univ.) OCS2021-53 OFT2021-80 OPE2021-68 |
We fabricated Heterogeneous wavelength-tunable laser using Quantum dot semiconductor optical amplifier (QD-SOA) and Sili... [more] |
OCS2021-53 OFT2021-80 OPE2021-68 pp.60-64(OCS), pp.55-59(OFT), pp.98-102(OPE) |
OPE, OFT, OCS (Joint) [detail] |
2022-02-25 15:20 |
Online |
Online |
FMCW measurement by using phase modulation of silicon photonics hybrid laser diode Rio Kawana, Tomohiro Kita (Waseda Univ.) OCS2021-54 OFT2021-81 OPE2021-69 |
In autonomous driving, a distance measurement device using the FMCW method that can measure long distances with high acc... [more] |
OCS2021-54 OFT2021-81 OPE2021-69 pp.65-68(OCS), pp.60-63(OFT), pp.103-106(OPE) |
OPE, LQE |
2020-11-20 15:30 |
Online |
Online |
Increasing the Extinction Ratio of Si Optical Modulators Hiroki Kojima (Waseda Univ.), Jun-ichi Hujikata (NEC), Tomohiro Kita (Waseda Univ.) OPE2020-70 LQE2020-50 |
In recent years, digital coherent optical transmission systems have been put to practical use, and Si modulators with a ... [more] |
OPE2020-70 LQE2020-50 pp.125-128 |
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, SIPH |
2018-12-06 17:10 |
Tokyo |
Keio University |
Fast and low power consumption MZI switch Manuel Mendez-Astudillo, Tomohiro Kita (Waseda Univ.) OPE2018-110 LQE2018-120 SIPH2018-26 |
In this paper we present the design of a novel thermo-optic phase shifter in Silicon-on-Insulator based on direct curren... [more] |
OPE2018-110 LQE2018-120 SIPH2018-26 pp.63-66 |
EMD, LQE, OPE, CPM, R |
2018-08-24 14:30 |
Hokkaido |
Otaru Camber of Commerce & Industry |
Application of Si-Photonics-Based Quantum Dot External cavity Tunable Laser for the 1um-band Atsushi Matsumoto, Toshimasa Umezawa, Naokatsu Yamamoto (NICT), Tomohiro Kita (Waseda Univ.) R2018-33 EMD2018-36 CPM2018-36 OPE2018-63 LQE2018-52 |
In recent years, information and communication traffic have exponentially increased. So far, we have paid attention not ... [more] |
R2018-33 EMD2018-36 CPM2018-36 OPE2018-63 LQE2018-52 pp.83-86 |
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 |
R |
2017-05-26 14:00 |
Okayama |
Purity Makibi |
Three Repair Options Depending on Failure Time Tomohiro Kitagawa, Tetsushi Yuge, Shigeru Yanagi (NDA) R2017-4 |
A maintenance model depending on occurrence times of failures is proposed. For a system equipped on a vehicle such as a ... [more] |
R2017-4 pp.19-24 |
OPE |
2016-12-08 17:00 |
Okinawa |
|
Proposal of optical carrier converter by using Raman scattering in silicon photonic wire waveguide Tomohiro Kita, Hirohito Yamada (Tohoku Univ.) OPE2016-109 |
We have investigated the wavelength conversion from C-band to O-band by using Raman scattering on silicon photonic wire ... [more] |
OPE2016-109 pp.29-32 |
R |
2016-10-21 14:30 |
Okinawa |
Okinawaken Seinenkaikan |
Maintenance Policies for a System with Random and Pre-determined Working Time Tomohiro Kitagawa, Tetsushi Yuge, Shigeru Yanagi (NDA) R2016-44 |
[more] |
R2016-44 pp.13-18 |
IN, ICTSSL, NWS (Joint) |
2016-10-21 13:30 |
Osaka |
Osaka Uinv. |
Study on Evaluation Analysis System Using iOS terminal for Emergency Rescue Evacuation Support System (ERESS) Ken Komaki, Tomohiro Kitamura, Tomotaka Wada (Kansai Univ.), Kazuhiro Ohtsuki (Kobe Univ.) ICTSSL2016-28 |
A lot of people have got injured and died by sudden disasters such as fires and terrorisms. Most of the casualties are ... [more] |
ICTSSL2016-28 pp.47-52 |
R |
2016-07-29 15:45 |
Hokkaido |
Otaru Chamber of Commerce and Industry |
Optimal Maintenance Policy for a System Equipped on Ship Tomohiro Kitagawa, Tetsushi Yuge, Shigeru Yanagi (NDA) R2016-18 |
[more] |
R2016-18 pp.31-36 |
LQE, EST, OPE, EMT, PN, MWP, IEE-EMT, PEM [detail] |
2016-01-28 15:10 |
Hyogo |
|
Silicon photonics-Quantum dot wavelength tunable laser diode Tomohiro Kita (Tohoku Univ.), Atsushi Matsumoto, Naokatsu Yamamoto (NICT), Tetsuya Kawanishi (Waseda Univ.), Hirohito Yamada (Tohoku Univ.) PN2015-70 EMT2015-121 OPE2015-183 LQE2015-170 EST2015-127 MWP2015-96 |
[more] |
PN2015-70 EMT2015-121 OPE2015-183 LQE2015-170 EST2015-127 MWP2015-96 pp.221-224 |
R |
2015-10-16 12:00 |
Fukuoka |
|
Maintenance Modelling for a system on Navy Ship Tomohiro Kitagawa, Tetsushi Yuge, Shigeru Yanagi (NDA) R2015-55 |
[more] |
R2015-55 pp.21-25 |
R |
2015-07-31 14:10 |
Aomori |
|
Replacement Manegement for a One-Shot System with Minimal Repair Tomohiro Kitagawa, Tetsushi Yuge, Shigeru Yanagi (NDA) R2015-16 |
[more] |
R2015-16 pp.13-17 |
R |
2014-12-19 14:05 |
Tokyo |
|
Availability Measure of One-shot Systems with Minimal Repair Tomohiro Kitagawa, Tetsushi Yuge, Shigeru Yanagi (NDA) R2014-67 |
One-shot system is a kind of systems that can be used only once during its life, whose failures are detected only throug... [more] |
R2014-67 pp.13-18 |
OPE, LQE |
2014-12-18 10:05 |
Tokyo |
Kikai-Shinko-Kaikan, NTT Atsugi R&D center |
[Invited Talk]
Narrow Linewidth and High Output Power Silicon Photonic Hybrid Ring-Filter External Cavity Wavelength Tunable Lasers Kenji Sato, Naoki Kobayashi, Masahiko Namiwaka (NEC Yamanashi), Keisuke Yamamoto (NEC), Shinya Watanabe (NEC Yamanashi), Tomohiro Kita, Hirohito Yamada (Tohoku Univ.), Hiroyuki Yamazaki (NEC Yamanashi) OPE2014-139 LQE2014-126 |
Si-photonic Hybrid Ring External Cavity (SHREC) wavelength tunable lasers by passive alignment techniques with over 100-... [more] |
OPE2014-139 LQE2014-126 pp.1-6 |
OPE, LQE |
2014-12-18 10:40 |
Tokyo |
Kikai-Shinko-Kaikan, NTT Atsugi R&D center |
Silicon Photonic Wavelength Tunable Laser with Highly Asymmetric Mach-Zehnder Interferometer Rui Tang, Tomohiro Kita, Hirohito Yamada (Tohoku Univ.) OPE2014-140 LQE2014-127 |
Utilizing tunable silicon ring resonator filter as an external resonator, the wavelength tunable laser has demonstrated ... [more] |
OPE2014-140 LQE2014-127 pp.7-10 |