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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 36  /  [Next]  
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
 Results 1 - 20 of 36  /  [Next]  
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