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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 13 of 13  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
PN 2022-11-08
11:50
Kochi
(Primary: On-site, Secondary: Online)
Proposal of a method for acquiring optical signal transmission characteristics using an inter-band all-optical wavelength converter
Haruka Minami, Kenta Hirose, Takafumi Fukatani, Takeshi Seki, Shimpei Shimizu, Takayuki Kobayashi, Takushi Kazama, Koji Enbutsu, Takeshi Umeki, Kei Watanabe, Takashi Miyamura (NTT)
 [more]
OPE, OCS, LQE 2022-10-21
10:25
Ehime
(Primary: On-site, Secondary: Online)
[Invited Talk] WDM Transmission in S-Band Using PPLN-Based Wavelength Converters Terminated with 400-Gb/s C-Band Real-Time Transceivers
Tomoyuki Kato, Hidenobu Muranaka, Yu Tanaka, Yuichi Akiyama, Takeshi Hoshida (Fujitsu), Shimpei Shimizu, Takayuki Kobayashi, Takushi Kazama, Takeshi Umeki, Kei Watanabe, Yutaka Miyamoto (NTT)
(To be available after the conference date) [more]
QIT
(2nd)
2021-12-01
11:10
Online Online A fiber-coupled frequency converter based on a PPLN waveguide for quantum internet
Shoichi Murakami, Rintaro Fujimoto, Toshiki Kobayashi, Rikizo Ikuta (Osaka Univ.), Asuka Inoue, Takeshi Umeki, Ryoichi Kasahara, Tetsuya Mukai (NTT), Shigehito Miki (NICT/Kobe Univ.), Shigeyuki Miyajima, Masahiro Yabuno, Fumihiro China, Hirotaka Terai (NICT), Nobuyuki Imoto, Takashi Yamamoto (Osaka Univ.)
 [more]
OFT, OCS, IEE-CMN, ITE-BCT [detail] 2021-11-18
13:45
Online Online [Invited Talk] High-capacity and Long-haul WDM Transmission using PPLN-based Optical Parametric Inline Amplifier
Takayuki Kobayashi, Shimpei Shimizu, Masanori Nakamura, Takushi Kazama, Takeshi Umeki, Ryoichi Kasahara, Fukutaro Hamaoka, Yutaka Miyamoto (NTT) OCS2021-29
Expansion of the optical band used for wavelength division multiplexing (WDM) is a key to increasing the capacity of opt... [more] OCS2021-29
pp.5-8
PN 2021-03-01
14:30
Online Online [Invited Lecture] Wide-band WDM Inline-amplified Transmission by Optical Parametric Amplifier using PPLN Waveguides
Takayuki Kobayashi, Shimpei Shimizu, Masanori Nakamura, Takeshi Umeki, Takushi Kazama, RYoichi Kasahara, Fukutaro Hamaoka, Munehiko Nagatani, Hiroshi Yamazaki, Hideyuki Nosaka, Yutaka Miyamoto (NTT) PN2020-44
To increase the capacity of optical transmission systems, it is important to improve a spectral efficiency by utilizing ... [more] PN2020-44
pp.15-19
OPE, OCS, LQE 2020-10-23
10:35
Online Online [Invited Talk] Wide-band WDM Inline-amplified Transmission with PPLN-based Optical Parametric Amplifier
Takayuki Kobayashi, Shimpei Shimizu, Masanori Nakamura, Takeshi Umeki, Takushi Kazama, Ryoichi Kasahara, Fukutaro Hamaoka, Munehiko Nagatani, Hiroshi Yamazaki, Hideyuki Nosaka, Yutaka Miyamoto (NTT) OCS2020-11 OPE2020-34 LQE2020-14
In optical transmission systems, the extension of the optical-band used for wavelength division multiplexing is a promis... [more] OCS2020-11 OPE2020-34 LQE2020-14
pp.17-20
OPE, OCS, OFT
(Joint) [detail]
2018-02-16
10:40
Okinawa Okinawa Prefectural Museum Pump Phase-Locked to PDM Phase-Conjugated Twin Waves by using Phase Modulation in Optical Parametric Phase-Sensitive Amplifier Repeaters
Ikuya Nagatomi, Kouhei Aga, Takumi Okabe, Wataru Nakanishi, Yasuhiro Okamura (Tokushima Univ.), Takeshi Umeki, Ryoichi Kasahara (NTT), Atushi Takada (Tokushima Univ.) OCS2017-88 OPE2017-181
Pump phase-locked to PDM phase-conjugated twin waves (PDM-PCTWs) in optical parametric phase-sensitive amplifier repeate... [more] OCS2017-88 OPE2017-181
pp.45-48(OCS), pp.63-66(OPE)
R, EMD, CPM, LQE, OPE 2017-09-01
14:20
Aomori   [Invited Talk] Reports on OECC/PS2016 -- Passive devices --
Takeshi Umeki (NTT) R2017-39 EMD2017-33 CPM2017-54 OPE2017-63 LQE2017-36
 [more] R2017-39 EMD2017-33 CPM2017-54 OPE2017-63 LQE2017-36
p.71
OME, OPE 2016-11-24
15:00
Miyagi   Phase-Sensitive Amplifier for DWDM Signal using PPLN Waveguides
Takushi Kazama, Takeshi Umeki, Masashi Abe, Koji Enbutsu, Yutaka Miyamoto, Hirokazu Takenouchi (NTT) OME2016-48 OPE2016-98
 [more] OME2016-48 OPE2016-98
pp.1-5
OPE, LQE, OCS 2015-10-30
16:15
Oita Beppu International Convention Center Phase-sensitive amplification using PPLN integrated optical waveguide circuit
Takushi Kazama, Takeshi Umeki, Koji Enbutsu (NTT), Masaki Asobe (Tokai Univ.), Hirokazu Takenouchi (NTT) OCS2015-69 OPE2015-119 LQE2015-88
(Advance abstract in Japanese is available) [more] OCS2015-69 OPE2015-119 LQE2015-88
pp.141-144
MWP, EMT, PN, LQE, OPE, EST, IEE-EMT [detail] 2014-01-24
13:10
Kyoto Doshisha University Second-harmonic-pumped wavelength conversion in monolithically integrated PPLN waveguides using reflection-type MMI
Takushi Kazama, Takeshi Umeki, Masaki Asobe, Hirokazu Takenouchi (NTT) PN2013-74 OPE2013-188 LQE2013-174 EST2013-123 MWP2013-94
To obtain a higher gain and lower NF of phase sensitive amplifier (PSA) using periodically-poled lithium niobate (PPLN),... [more] PN2013-74 OPE2013-188 LQE2013-174 EST2013-123 MWP2013-94
pp.263-266
OPE, LQE, CPM, EMD, R 2013-08-29
17:45
Hokkaido sun-refre Hakodate Noise characteristics of phase-sensitive amplifier using a PPLN waveguide for SHG integrated with a high-power-tolerant phase locking modulator
Koji Enbutsu, Takeshi Umeki, Masaki Asobe, Hirokazu Takenouchi (NTT) R2013-45 EMD2013-51 CPM2013-70 OPE2013-74 LQE2013-44
We demonstrated a phase-sensitive amplifier by using a PPLN waveguide for pump generation and a monolithically-integrate... [more] R2013-45 EMD2013-51 CPM2013-70 OPE2013-74 LQE2013-44
pp.85-88
CS, NS, IN
(Joint)
2011-09-02
13:00
Miyagi Tohoku University Study of In-line Monitoring with Visible Light by Using λ-Conversion
Takahiro Kubo, Takeshi Umeki, Takuya Kanai, Takashi Yamada, Shunji Kimura, Naoto Yoshimoto, Masaki Asobe (NTT) CS2011-42
Recently, FTTH is expanding rapidly in access network. And It has been pointed out that operational expenditure (OpEx) i... [more] CS2011-42
pp.87-92
 Results 1 - 13 of 13  /   
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