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All Technical Committee Conferences (Searched in: All Years)
| 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 |
|
| 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 |
|
| 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 |
|
| 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 |
| EMD, LQE, OPE, CPM, R | 2014-08-22 10:50 |
Hokkaido | Otaru Economy Center | Narrow spectral linewidth Silicon photonic wavelengtrh tunable laser diode module Tomohiro Kita, Rui Tang, Hirohito Yamada (Tohoku Univ.) R2014-39 EMD2014-44 CPM2014-59 OPE2014-69 LQE2014-43 |
[more] | R2014-39 EMD2014-44 CPM2014-59 OPE2014-69 LQE2014-43 pp.83-86 |
| OPE, LQE | 2014-06-20 11:25 |
Tokyo | Wide band wavelength generation in nonlinear TiO2 waveguide Tomohiro Kita, Koji Uchijima, Masahiro Yabuno, Takashi Aisaka, Ryuji Katayama, Keiichi Edamatsu, Hirohito Yamada (Tohoku Univ.) OPE2014-14 LQE2014-19 |
We studied the nonlinear optical waveguide with TiO2 core which has large nonlinear optical constant and wide band-gap e... [more] | OPE2014-14 LQE2014-19 pp.11-14 |
|
| LQE, OCS, OPE | 2013-10-25 09:50 |
Fukuoka | Fabrication of Narrow Spectral Linewidth Wavelength Tunable Laser Diode with Si Photonic Wire Waveguide Tomohiro Kita, Keita Nemoto, Hirohito Yamada (Tohoku Univ.) OCS2013-66 OPE2013-112 LQE2013-82 |
We fabricated the narrow spectral linewidth wavelength tunable laser diodes with Si photonic wire waveguide ring resonat... [more] | OCS2013-66 OPE2013-112 LQE2013-82 pp.85-88 |
|
| LQE, OPE | 2013-06-21 10:35 |
Tokyo | Silicon photonics devices on 300 mm wafer fabricated by using ArF immersion lithography Tomohiro Kita, Yuichiro Tanushi, Masaki Nara, Syu Hirano (Tohoku Univ.), Munehiro Toyama, Miyoshi Seki, Keiji Koshino, Nobuyuki Yokoyama, Minoru Ohtsuka, Akinobu Sugiyama, Eiichi Ishitsuka, Tsukuru Sano, Tsuyoshi Horikawa (AIST), Hirohito Yamada (Tohoku Univ.) OPE2013-7 LQE2013-17 |
We have investigated optical characteristics of Si photonics devices formed on 300 mm SOI wafers by using ArF immersion ... [more] | OPE2013-7 LQE2013-17 pp.1-5 |
|
| LQE, CPM, EMD, OPE, R | 2012-08-24 13:35 |
Miyagi | Tohoku Univ. | Fabrication of Narrow Spectral Linewidth Wavelength Tunable Laser Diode with Si Photonic Wire Waveguide Tomohiro Kita, Keita Nemoto, Hirohito Yamada (Tohoku Univ.) R2012-44 EMD2012-50 CPM2012-75 OPE2012-82 LQE2012-48 |
We fabricated the narrow spectral linewidth wavelength tunable laser diodes with Si photonic wire waveguide ring resonat... [more] | R2012-44 EMD2012-50 CPM2012-75 OPE2012-82 LQE2012-48 pp.111-114 |
| OPE, OME | 2009-11-13 15:15 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Numerical analysis of bending loss for Si photonic-wire waveguides Yohei Hokama, Tomohiro Kita, Yasuo Ohtera, Hirohito Yamada (Tohoku Univ.) OME2009-62 OPE2009-157 |
Bending loss of Si photonic-wire waveguides were analyzed. We introduced a simple method to estimate the bending loss by... [more] | OME2009-62 OPE2009-157 pp.49-54 |
| OPE, OME | 2009-11-13 15:40 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Study of optical coupling between Si photonic-wire waveguides and laser diodes on SOI Masahiro Abe (Tohoku Univ.), Satoshi Miyamura, Koji Nakamura (Oki Electric Industry Co., Ltd), Tomohiro Kita, Yasuo Ohtera, Hirohito Yamada (Tohoku Univ.) OME2009-63 OPE2009-158 |
Integration technique of laser diodes or photodiodes on Si substrates with SOI optical waveguides is required for realiz... [more] | OME2009-63 OPE2009-158 pp.55-60 |
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