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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 18 of 18  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
SeMI 2024-01-19
10:45
Yamanashi Raki House Kaiji Optimizing Power Level Selection Probability in GF-NOMA for Users Distributed in 3D Space
Yuta Ueda, Takeshi Hirai, Rei Oda, Naoki Wakamiya (Osaka Univ.) SeMI2023-66
This paper maximizes the throughput of the grant-free non-orthogonal multiple access (GF-NOMA) for users distributed in ... [more] SeMI2023-66
pp.88-93
ED, MWPTHz 2023-12-21
16:45
Miyagi RIEC, Tohoku Univ.
(Primary: On-site, Secondary: Online)
Demonstration of a secure wireless communication system based on XOR operation between two data in terahertz waves
Takuya Yano, Ming Che, Hanwei Chen, Naoya Seiki, Takashi Shiramizu, Yuya Mikami (Kyushu Univ.), Yuta Ueda (NTT), Kazutoshi Kato (Kyushu Univ.) ED2023-56 MWPTHz2023-66
Future wireless communications will require high security as well as high capacity. We have proposed a wireless communic... [more] ED2023-56 MWPTHz2023-66
pp.16-19
ED, MWPTHz 2023-12-21
17:35
Miyagi RIEC, Tohoku Univ.
(Primary: On-site, Secondary: Online)
Characterization of high-speed wavelength switching of wavelength tunable laser and its applicability to optical switches
Ryo Matsumoto, Naoto Masutomi, Ryota Kaide, Yuya Mikami (Kyushu Univ.), Yuta Ueda (NTT), Kazutoshi Kato (Kyushu Univ.) ED2023-58 MWPTHz2023-68
With the rapid increase in communication traffic in recent years, high-speed optical switches are required for optical c... [more] ED2023-58 MWPTHz2023-68
pp.25-28
LQE, OPE, SIPH 2018-12-06
15:50
Tokyo Keio University [Invited Talk] 2-um-band tunable laser for CO2 gas sensing
Yuta Ueda, Takahiko Shindo, Takuya Kanai, Makoto Shimokozono, Naoki Fujiwara (NTT), Hiroyuki Ishii (former NTT), Hideaki Matsuzaki (NTT) OPE2018-104 LQE2018-114 SIPH2018-20
 [more] OPE2018-104 LQE2018-114 SIPH2018-20
pp.35-38
LQE 2018-07-13
14:20
Hokkaido   Ultra-high bandwidth InP modulator co-assembled with high-speed electronics
Yoshihiro Ogiso, Josuke Ozaki, Shinsuke Nakano, Yuta Ueda, Hitoshi Wakita (NTT) LQE2018-35
We developed an ultra-high bandwidth and a low drive voltage (1.5V Vπ) InP-based optical modulator by employing both a n... [more] LQE2018-35
pp.61-64
LQE, OPE, OCS 2016-10-28
11:05
Miyazaki Miyazaki Citizen's Plaza 100-Gbit/s operation of 4-channel directly modulated DFB laser monolithically integrated with MMI coupler
Wataru Kobayashi, Shigeru Kanazawa, Yuta Ueda (NTT), Takeshi Fujisawa (Hokkaido Univ), Hiroyuki Ishii, Mikitaka Itoh (NTT) OCS2016-49 OPE2016-90 LQE2016-65
We fabricate a 1.3 μm, 4-channel directly modulated laser (DML) array monolithically integrated multimode interference (... [more] OCS2016-49 OPE2016-90 LQE2016-65
pp.83-86
LQE, OPE, EMD, R, CPM 2016-08-26
14:35
Hokkaido   Equalizer-free 100-Gbit/s/λ signal transmission using flip-chip interconnection EADFB laser module
Shigeru Kanazawa, Satoshi Tsunashima, Yasuhiko Nakanishi, Yoshifumi Muramoto, Hiroshi Yamazaki, Yuta Ueda, Wataru Kobayashi, Hiroyuki Ishii, Hiromasa Tanobe, Hiroaki Sanjoh (NTT)
 [more]
OPE, OCS 2016-05-13
16:55
Tokyo Kikai-Shinko-Kaikan Bldg(Tokyo) [Special Invited Talk] 200-Gbit/s operation of high-speed lumped-electrode EADFB laser module using flip-chip interconnection technique
Shigeru Kanazawa, Hiroshi Yamazaki, Yasuhiko Nakanishi, Takeshi Fujisawa, Kiyoto Takahata, Yuta Ueda, Wataru Kobayashi, Yoshifumi Muamoto, Hiroyuki Ishii, Hiroaki Sanjoh (NTT) OCS2016-7 OPE2016-7
(Advance abstract in Japanese is available) [more] OCS2016-7 OPE2016-7
p.25
OPE, LQE, OCS 2015-10-30
09:25
Oita Beppu International Convention Center 8-channel reflection-type transversal filter with InP multimode interferometer
Yuta Ueda (NTT), Takeshi Fujisawa (former NTT), Masaki Kohtoku (NTT) OCS2015-56 OPE2015-106 LQE2015-75
(Advance abstract in Japanese is available) [more] OCS2015-56 OPE2015-106 LQE2015-75
pp.75-79
OPE, LQE, OCS 2015-10-30
10:50
Oita Beppu International Convention Center 100-Gbit/s/λ operation of flip-chip interconnection EADFB laser module
Shigeru Kanazawa, Takeshi Fujisawa, Kiyoto Takahata, Toshio Ito, Yuta Ueda, Wataru Kobayashi, Hiroyuki Ishii, Hiroaki Sanjoh (NTT) OCS2015-72 OPE2015-122 LQE2015-91
(Advance abstract in Japanese is available) [more] OCS2015-72 OPE2015-122 LQE2015-91
pp.155-158
OCS, OPE, LQE 2014-10-31
10:10
Nagasaki Nagasaki Museum of History and Culture Low-voltage Operation of Mach-Zehnder Interferometer-type Electroabsorption Modulator integrated with DFB laser diode
Yuta Ueda (NTT), Takeshi Fujisawa (Hokkaido Univ.), Shigeru Kanazawa, Wataru Kobayashi, Kiyoto Takahata, Hiroaki Sanjoh, Hiroyuki Ishii, Masaki Kohtoku (NTT) OCS2014-71 OPE2014-115 LQE2014-89
 [more] OCS2014-71 OPE2014-115 LQE2014-89
pp.153-157
MWP, EMT, PN, LQE, OPE, EST, IEE-EMT [detail] 2014-01-23
17:15
Kyoto Doshisha University An electroabsorption modulator integrated DFB laser array integrated with low-loss optical multiplexer for 100GbE
Takeshi Fujisawa, Shigeru Kanazawa, Yuta Ueda, Wataru Kobayashi, Kiyoto Takahata, Akira Ohki, Toshio Ito, Masaki Kohtoku, Hiroyuki Ishii (NTT) PN2013-59 OPE2013-173 LQE2013-159 EST2013-108 MWP2013-79
 [more] PN2013-59 OPE2013-173 LQE2013-159 EST2013-108 MWP2013-79
pp.135-140
HIP 2013-03-14
11:00
Okinawa okinawa-sangyoushien center A prototype system for record and playback vibro-tactile sensation with spacial information using TECHTILE toolkit
Yuta Ueda, Kouta Minamizawa, Susumu Tachi (Keio Univ) HIP2012-91
 [more] HIP2012-91
pp.85-86
OPE, LQE, OCS 2012-10-26
09:25
Miyazaki   An electroabsorption modulator integrated DFB laser for beyond 100G parallel LAN applications
Takeshi Fujisawa, Shigeru Kanazawa, Kiyoto Takahata, Akira Ohki, Yuta Ueda, Wataru Kobayashi, Ryuzo Iga, Hiroaki Sanjoh, Takayuki Yamanaka, Masaki Kohtoku, Hiroyuki Ishii (NTT) OCS2012-60 OPE2012-111 LQE2012-77
In 100GbE, a multi-lane LAN-WDM system, in which four 25-Gbit/s light sources with different waveglengths are used for t... [more] OCS2012-60 OPE2012-111 LQE2012-77
pp.97-101
PN 2012-03-12
14:55
Nagasaki BaramonNetKan [Encouragement Talk] 4x4 InAlGaAs/InAlAs Optical Switch Fabric by Cascading Mach-Zehnder Interferometer-type Optical Switches with Low-power and Low-polarization-dependent Operation
Yuta Ueda, Noriaki Koyama, Kazuki Kambayashi, Shinji Fujimoto, Katsuyuki Utaka (Waseda Univ.), Takashi Shiota, Takeshi Kitatani (Hitachi) PN2011-89
High-speed optical switches are essential devices to construct next generation optical networks. We have studied on 2 x ... [more] PN2011-89
pp.43-47
PN 2011-03-01
12:40
Kagoshima KKR Kagoshima Keitenkaku 4 x 4 InAlGaAs/InAlAs optical switch fabric by cascading Mach-Zehnder Interferometer-type optical switches with low-power and low-polarization-dependent operation
Yuta Ueda, Noriaki Koyama, Kazuki Kambayashi, Shinji Fujimoto, Katsuyuki Utaka (Waseda Univ.), Takashi Shiota, Takeshi Kitatani (Hitachi) PN2010-71
High-speed optical switches are essential devices to construct next generation optical networks. We have studied on 2 x ... [more] PN2010-71
pp.77-80
LQE, OPE 2009-06-19
09:55
Tokyo Kikai-Shinko-Kaikan Bldg. Polarization-independent and Low-Crosstalk Operation of InAlGaAs/InAlAs Mach-Zehnder Interferometer-Type Photonic Switch with Hybrid-waveguide Structure
Yuta Ueda, Shinji Fujimoto, Hiroto Yamada, Shinya Nakamura, Katsuyuki Utaka (Waseda Univ.), Takashi Shiota, Takeshi Kitatani (Hitachi, Ltd.) OPE2009-18 LQE2009-21
 [more] OPE2009-18 LQE2009-21
pp.13-17
PN 2008-03-14
11:20
Okinawa Ohama-Nobumoto-Kinenkan (Ishigakijima) Low-current Operation of InAlGaAs/InAlAs/InP Mach-Zehnder Interferometer Type Multi-mode Interference Photonic Switch (MIPS-MZ)
Yuta Ueda, Shinya Nakamura, Katsuyuki Utaka (WASEDA University), Takashi Shiota, Takeshi Kitatani (Central Research Laboratory, Hitachi, Ltd.) PN2007-87
We fabricated an InAlGaAs/InAlAs/InP semiconductor photonic switch with a Mach-Zehnder interferometer (MZI) and multi-mo... [more] PN2007-87
pp.75-79
 Results 1 - 18 of 18  /   
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