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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 52  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
EMT, PN, MWPTHz, IEE-EMT [detail] 2024-01-23
12:50
Kyoto Kyoto Univ. Yoshida Campus Multiple-Parallel Interference Optical Modulators Based on Multi-Branched MMI Optical Couplers
Shotaro Yasumori, Keita Morimoto, Tadashi Kawai, Akira Enokihara (Univ. of Hyogo), Shinya Nakajima, Kouichi Akahane (NICT) PN2023-61 EMT2023-101 MWPTHz2023-89
Multiple-parallel interference optical modulators, where multiple phase-modulated lightwaves are directly interfered wit... [more] PN2023-61 EMT2023-101 MWPTHz2023-89
pp.74-77
EMT, PN, MWPTHz, IEE-EMT [detail] 2024-01-23
13:15
Kyoto Kyoto Univ. Yoshida Campus Tolerance on Velocity Mismatch in Traveling-Wave Modulator Integrated with Electro-Optic Frequency-Domain Equalizer
Yuya Yamaguchi, Pham Tien Dat, Kouichi Akahane, Naokatsu Yamamoto (NICT), Atsushi Kanno (Nitech), Tetsuya Kawanishi (Waseda Univ.) PN2023-62 EMT2023-102 MWPTHz2023-90
 [more] PN2023-62 EMT2023-102 MWPTHz2023-90
pp.78-81
ED, MWPTHz 2022-12-19
15:25
Miyagi   Admittance spectroscopy of triple-barrier resonant tunneling diodes for extraction of quantum transport parameters.
Takeshi Makino, Michihiko Suhara (TMU), Kiyoto Asakawa (TMCIT), Issei Watanabe, Koichi Akahane (NICT) ED2022-75 MWPTHz2022-46
Triple-barrier resonant tunneling diodes (TBRTDs) consisting of InGaAs/InAs/InAlAs heterostructures fabricated by low-te... [more] ED2022-75 MWPTHz2022-46
pp.19-22
EMD, R, LQE, OPE, CPM 2022-08-26
14:00
Chiba  
(Primary: On-site, Secondary: Online)
[Invited Talk] High performance photonic devices for massive integration
Kouichi Akahane, Atsushi Matsumoto, Toshimasa Umezawa, Naokatsu Yamamoto, Atsushi Kanno (NICT) R2022-27 EMD2022-15 CPM2022-32 OPE2022-58 LQE2022-21
 [more] R2022-27 EMD2022-15 CPM2022-32 OPE2022-58 LQE2022-21
pp.58-61
EMT, EST, LQE, MWP, OPE, PEM, PN, IEE-EMT [detail] 2018-01-25
14:40
Hyogo   Development of a Quantum Dot Tunable Laser for TO Band
Yasunori Tomomatsu (Koshin Kogaku), Katsumi Yoshizawa (PioneerMTC), Koichi Akahane, Naokatsu Yamamoto (NICT) PN2017-62 EMT2017-99 OPE2017-140 LQE2017-122 EST2017-98 MWP2017-75
 [more] PN2017-62 EMT2017-99 OPE2017-140 LQE2017-122 EST2017-98 MWP2017-75
pp.131-135
OCS, OPE, LQE 2017-10-26
11:15
Kumamoto Josaien, Sakuranobaba 1550nm range quantum dots laser integrated with composition-intermixed quantum dots waveguide
Shin'e Matsui, Yota Akashi, Shohei Isawa, Atsushi Matsumoto (Waseda Univ.), Koichi Akahane (NICT), Yuichi Matsushima (Waseda Univ. GCS), Hiroshi Ishikawa, Katsuyuki Utaka (Waseda Univ.) OCS2017-39 OPE2017-71 LQE2017-44
We had developed composition-intermixing technique using ion implantation and rapid thermal annealing (QDI: Quantum Dots... [more] OCS2017-39 OPE2017-71 LQE2017-44
pp.19-24
LQE, LSJ 2017-05-26
15:00
Ishikawa   Extreme Thermal Stability of 1550 nm Band Highly Stacked QD-LDs with p-Doped Structure
Atsushi Matsumoto, Kouichi Akahane, Toshimasa Umezawa, Naokatsu Yamamoto (NICT) LQE2017-19
In this paper, we fabricated 1.55-μm band p-doped broad-area (BA) and ridge structured 30-layer stacked quantum-dot (QD)... [more] LQE2017-19
pp.79-84
OPE, LQE 2016-06-17
11:25
Tokyo   1550nm range quantum dots laser integrated with composition-intermixed quantum dots waveguide
Shin'e Matsui, Yuki Takei (Waseda Univ.), Atsushi Matsumoto, Koichi Akahane (NICT), Yuichi Matsushima, Hiroshi Ishikawa, Katsuyuki Utaka (Waseda Univ.) OPE2016-11 LQE2016-21
We had developed composition-intermixing technique using ion implantation and rapid thermal annealing (QDI: Quantum Dots... [more] OPE2016-11 LQE2016-21
pp.11-14
OPE, LQE 2016-06-17
13:40
Tokyo   Change of the frequency separation for 2 mode lasers by using the birefringent etalon filter
Masaki Inui (Aoyama Gakuin Univ), Kouichi Akahane, Atsusi Kanno, Naokatsu Yamamoto, Tetsuya Kawanisi (NICT), Hideyuki Sotobayasi (Aoyama Gakuin Univ) OPE2016-13 LQE2016-23
Recently, the application of millimeter and terahertz waves to high speed wireless communication and sensing field attra... [more] OPE2016-13 LQE2016-23
pp.21-24
LQE, LSJ 2016-05-19
16:00
Fukui   Research on quantum dot optical gain modulator integrated with semiconductor optical amplifier
Toshifumi Emori (NICT/TDU), Naokatsu Yamamoto, Kouichi Akahane, Toshimasa Umezawa, Atsushi Matsumoto, Tetsuya Kawanishi (NICT), Katsuki watanabe (NICT/TDU), Hiroshi Takai (TDU) LQE2016-5
(To be available after the conference date) [more] LQE2016-5
pp.21-24
LQE, EST, OPE, EMT, PN, MWP, IEE-EMT, PEM [detail] 2016-01-28
14:45
Hyogo   OOK bias free operational 107 Gbaud high speed UTC-PD module
Toshimasa Umezawa, Atsushi Kanno, Kouichi Akahane, Atsushi Matsumoto, Naokatsu Yamamoto (NICT), Tetsuya Kawanishi (Waseda) PN2015-69 EMT2015-120 OPE2015-182 LQE2015-169 EST2015-126 MWP2015-95
 [more] PN2015-69 EMT2015-120 OPE2015-182 LQE2015-169 EST2015-126 MWP2015-95
pp.217-220
QIT
(2nd)
2015-11-24
13:40
Kanagawa NTT Atsugi R&D center [Poster Presentation] Theoretical Analysis of the Coherent Dynamics in an Inhomogeneous V-type 3-Level System of Quantum Dots
Sayaka Kitazawa (Keio Univ.), Kouichi Akahane (NICT), Shota Ichikawa, Yuto Arai, Junko Ishi-Hayase (Keio Univ.)
 [more]
OPE, LQE, OCS 2015-10-30
11:15
Oita Beppu International Convention Center Characteristics of highly stacked InAs quantum-dot laser grown on vicinal (001)InP substrate
Kouichi Akahane, Toshimasa Umezawa, Atsushi Matsumoto, Naokatsu Yamamoto (NICT) OCS2015-73 OPE2015-123 LQE2015-92
We fabricated broad-area laser diodes consisting of 30-layer stacks of InAs quantum dots by using a strain-compensation ... [more] OCS2015-73 OPE2015-123 LQE2015-92
pp.159-162
CPM, OPE, LQE, R, EMD 2015-08-28
14:50
Aomori Aomori-Bussankan-Asupamu Development of broadband QD ridge-waveguide laser diode in 1.1μm
Katsumi Yoshizawa, Yoshinori Sawado (PioneerMTC), Kouichi Akahane, Naokatsu Yamamoto (NICT) R2015-46 EMD2015-54 CPM2015-70 OPE2015-85 LQE2015-54
To develop a new optical frequency resource for the optical communications, we focused on T-Band (1000-1260nm) and the O... [more] R2015-46 EMD2015-54 CPM2015-70 OPE2015-85 LQE2015-54
pp.115-118
LQE, OPE 2015-06-19
13:00
Tokyo   1550nm-Band Highly-Stacked QD Intermixing with Ar Implantation for Photonic Integrated Devices
Atsushi Matsumoto (NICT), Yuki Takei (Waseda Univ.), Kouichi Akahane, Naokatsu Yamamoto, Tetsuya Kawanishi (NICT), Hiroshi Ishikawa, Yuichi Matsushima, Katsuyuki Utaka (Waseda Univ.) OPE2015-12 LQE2015-22
In order to realize the monolithic optical integrated devices with using highly stacked semiconductor quantum dots struc... [more] OPE2015-12 LQE2015-22
pp.9-13
EST, OPE, LQE, EMT, PN, MWP, IEE-EMT [detail] 2015-01-29
09:00
Osaka   Fabrication of carbon nanotube implantation embedded structure in ZnO
Shunichi Umeda (Aoyamagakuin Univ.), Kouichi Akahane (NICT), Hideyuki Sotobayashi (Aoyamagakuin Univ.) PN2014-27 OPE2014-152 LQE2014-139 EST2014-81 MWP2014-49
CNT is expected as an application to optical device, because it has a lot of unique optical properties. Until now the st... [more] PN2014-27 OPE2014-152 LQE2014-139 EST2014-81 MWP2014-49
pp.1-4
EST, OPE, LQE, EMT, PN, MWP, IEE-EMT [detail] 2015-01-30
10:30
Osaka   Monolithically integrated quantum dot optical modulator with amplifier for pioneering huge optical frequency resources in T+O bands
Naokatsu Yamamoto, Kouichi Akahane, Toshimasa Umezawa, Tetsuya Kawanishi (NICT) PN2014-67 OPE2014-192 LQE2014-179 EST2014-121 MWP2014-89
 [more] PN2014-67 OPE2014-192 LQE2014-179 EST2014-121 MWP2014-89
pp.251-254
OCS, OPE, LQE 2014-10-30
13:15
Nagasaki Nagasaki Museum of History and Culture Quantum dot comb laser for simultaneously multi-peak generation
Katsuki Watanabe (Tokyo Denki Univ.), Naokatsu Yamamoto, Kouichi Akahane, Toshimasa Umezawa, Tetsuya Kawanishi, Hiroshi Takai (NICT) OCS2014-47 OPE2014-91 LQE2014-65
 [more] OCS2014-47 OPE2014-91 LQE2014-65
pp.27-32
OCS, OPE, LQE 2014-10-30
13:15
Nagasaki Nagasaki Museum of History and Culture Gain Characteristics and Piezoelectric effect of 1550nm-Band QD-SOA Grown on InP(311)B Substrate for Ultra-Fast All-Optical Logic Gate Devices
Atsushi Matsumoto (NICT), Yuki Takei (Waseda Univ.), Kouichi Akahane (NICT), Hiroshi Ishikawa, Yuichi Matsushima, Katsuyuki Utaka (Waseda Univ.) OCS2014-58 OPE2014-102 LQE2014-76
In this paper, we fabricated the QD-SOA consisting of the 20-layer-stacked QDs structure with the strain-compensation te... [more] OCS2014-58 OPE2014-102 LQE2014-76
pp.87-91
OCS, OPE, LQE 2014-10-30
17:20
Nagasaki Nagasaki Museum of History and Culture Fabrication of InAs quantum dots on vicinal (001)InP substrate and its application for laser diode
Kouichi Akahane, Naokatsu Yamamoto, Toshimasa Umezawa, Tetsuya Kawanishi (NICT) OCS2014-67 OPE2014-111 LQE2014-85
 [more] OCS2014-67 OPE2014-111 LQE2014-85
pp.131-134
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