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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OPE, LQE, OCS | 2024-10-18 13:00 |
Yamaguchi | (Yamaguchi) | [Invited Talk]
Application of PPLN-Based Non-Degenerate Phase-Sensitive Amplifier to Optical Coherent Transmission Systems Shimpei Shimizu, Takushi Kazama, Takeshi Umeki, Koji Enbutsu, Masashi Abe, Masanori Nakamura, Takayuki Kobayashi, Yutaka Miyamoto (NTT)  OCS2024-41 OPE2024-94 LQE2024-41 |
This paper reviews the challenges for the application of a non-degenerate phase-sensitive amplifier (ND-PSA) using perio... [more] | OCS2024-41 OPE2024-94 LQE2024-41 pp.87-92 |
| OCS, OFT, IEE-CMN, ITE-BCT (Joint) [detail] |
2023-11-10 13:25 |
Kyoto | (Kyoto, Online) (Primary: On-site, Secondary: Online) |
Gaussian-noise-model-based SNR Estimation in 15.2-THz Bandwidth 400-km Inline-amplified Transmission Kosuke Kimura, Takayuki Kobayashi, Shimpei Shimpei, Masanori Nakamura, Takushi Kazama, Masashi Abe, Takeshi Umeki, Akira Kawai, Fukutaro Hamaoka, Yutaka Miyamoto (NTT) OCS2023-46 |
We demonstrated that mean errors of the SNRs estimated with GN model accounting for SRS were less than 1 dB in 15.2-THz ... [more] | OCS2023-46 pp.16-19 |
| OCS, LQE, OPE | 2023-05-26 16:30 |
Online | Online (Online) | [Special Invited Talk]
14.1-THz Wide-band WDM Transmission using PPLN-based Optical Parametric Inline Amplifier Takayuki Kobayashi, Shimpei Shimizu, Masanori Nakamura, Takushi Kazama, Masashi Abe, Takeshi Umeki, Akira kawai, Fukutaro Hamaoka, Munehiko Nagatani, Hiroshi Yamazaki, Yutaka Miyamoto (NTT) OCS2023-8 OPE2023-8 LQE2023-8 |
As digital coherent technologies have matured, a spectral efficiency achieved by the advanced modulation format of optic... [more] | OCS2023-8 OPE2023-8 LQE2023-8 pp.32-35 |
| PN | 2022-11-08 11:50 |
Kochi | (Kochi, Online) (Primary: On-site, Secondary: Online) |
Proposal of a method for acquiring optical signal transmission characteristics using an all-optical inter-band wavelength converter suitable for All-Photonics Network Haruka Minami, Kenta Hirose, Takafumi Fukatani, Masahiro Nakagawa, Takeshi Seki, Shimpei Shimizu, Takayuki Kobayashi, Takushi Kazama, Koji Enbutsu, Kei Watanabe, Takeshi Umeki, Takashi Miyamura (NTT) PN2022-30 |
All-Photonics Network (APN) aims at a large-capacity, low-latency, and low-energy-consumption network infrastructure by ... [more] | PN2022-30 pp.48-52 |
| OPE, OCS, LQE | 2022-10-21 10:25 |
Ehime | (Ehime, Online) (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) OCS2022-30 OPE2022-76 LQE2022-39 |
As a preliminary verification to demonstrate multi-band WDM transmission beyond the C+L-band without waiting for the new... [more] | OCS2022-30 OPE2022-76 LQE2022-39 pp.70-75 |
| QIT (2nd) |
2021-12-01 11:10 |
Online | 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 (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 (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 (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 (Okinawa) | 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 | (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 | (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 (Oita) | 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 (Kyoto) | 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 (Hokkaido) | 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 (Miyagi) | 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 |
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