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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 26  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
LQE, OPE, OCS 2023-11-24
16:05
Online Online [Special Invited Talk] O+S+C+L+U-Band Digital Coherent DWDM Transmission Using a Deployed Optical Cable
Daiki Soma (KDDI Research), Tomoyuki Kato (Fujitsu), Shohei Beppu, Daniel J. Elson (KDDI Research), Hidenobu Muranaka, Hiroyuki Irie, Shun Okada, Yu Tanaka (Fujitsu), Yuta Wakayama, Noboru Yoshikane (KDDI Research), Takeshi Hoshida (Fujitsu), Takehiro Tsuritani (KDDI Research) OCS2023-54 OPE2023-104 LQE2023-51
We demonstrate an O+S+C+L+U-band digital coherent DWDM transmission system as an upgrade scenario from a C+L-band system... [more] OCS2023-54 OPE2023-104 LQE2023-51
pp.25-29
OFT, OCS, LSJ
(Joint) [detail]
2023-08-25
11:20
Hokkaido  
(Primary: On-site, Secondary: Online)
Real-time 114-SDM transmission over a 6-mode 19-core fiber using real-time MIMO DSP
Shohei Beppu (KDDI Research), Masahiro Kikuta, Masahiro Shigihara (NEC Platforms), Koji Igarashi (Osaka University), Daiki Soma, Yuta Wakayama, Noboru Yoshikane (KDDI Research) OCS2023-25
Space-division multiplexing (SDM) transmission systems, in which multiple channels with different spatial paths are mult... [more] OCS2023-25
pp.33-38
PN, NS, OCS
(Joint)
2023-06-08
14:40
Kagawa
(Primary: On-site, Secondary: Online)
[Invited Talk] Automating Optical Transport Network Configuration Error Diagnosis by Large Language Model
Cen Wang, Daniel Elson, Yuta Wakayama, Noboru Yoshikane, Takehiro Tsuritani (KDDI) NS2023-25 OCS2023-11 PN2023-7
 [more] NS2023-25 OCS2023-11 PN2023-7
pp.30-34(NS), pp.11-15(OCS), pp.11-15(PN)
OFT 2023-05-12
09:30
Iwate Aiina(Iwate)
(Primary: On-site, Secondary: Online)
[Invited Talk] Increasing subsea cable capacity by using FIFO-less core-pumped multicore EDFA based on a side-polished fiber coupler
Yuta Wakayama, Noboru Yoshikane, Takehiro Tsuritani (KDDI Research) OFT2023-6
 [more] OFT2023-6
pp.24-28
OPE, LQE, OCS 2022-11-18
13:05
Online Online [Invited Talk] Report on ECOC2022 -- Core Transmission --
Yuta Wakayama (KDDI Research) OCS2022-51 OPE2022-86 LQE2022-49
(To be available after the conference date) [more] OCS2022-51 OPE2022-86 LQE2022-49
pp.1-4
OFT, OCS, LSJ
(Joint) [detail]
2021-08-27
14:15
Online Online 50.47-Tb/s Coupled 4-Core Fiber Transmission over 9,150 km
Daiki Soma, Shohei Beppu, Yuta Wakayama, Seiya Sumita, Hidenori Takahashi, Noboru Yoshikane, Itsuro Morita, Takehiro Tsuritani, Masatoshi Suzuki (KDDI Research) OCS2021-10
Since optical submarine cable systems are a part of the global communications infrastructure, their total capacity must ... [more] OCS2021-10
pp.5-10
OCS, OFT, LSJ
(Joint) [detail]
2020-08-28
14:25
Online Online Prototype of side-polished multi-core fiber coupler
Yuta Wakayama, Takehiro Tsuritani (KDDI Research) OCS2020-5
(Advance abstract in Japanese is available) [more] OCS2020-5
pp.5-9
OCS, OFT, OPE
(Joint) [detail]
2020-02-28
10:20
Okinawa Okinawa Jichikaikan 402.7-Tb/s Weakly-Coupled 10-Mode-Multiplexed Transmission
Daiki Soma, Shohei Beppu, Seiya Sumita, Yuta Wakayama, Takehiro Tsuritani (KDDI Research) OCS2019-84 OPE2019-107
A 125-um cladding space-division multiplexing (SDM) fiber is attractive for deployment of the SDM system since it is exp... [more] OCS2019-84 OPE2019-107
pp.33-38(OCS), pp.45-50(OPE)
PN 2019-08-27
14:40
Hokkaido Kanpo-No-Yado Otaru C+L-band Weakly-coupled 10-mode-multiplexed Transmission
Daiki Soma, Shohei Beppu, Seiya Sumita, Yuta Wakayama, Takehiro Tsuritani (KDDI Research) PN2019-23
A 125-μm cladding space-division multiplexing (SDM) fiber is attractive for deployment of the SDM system since it is exp... [more] PN2019-23
pp.85-89
PN 2018-11-22
10:20
Yamanashi Satoshi Omura Museum, Yamanashi Univ. Experimental Evaluation of Mode and Wavelength Switched Network using Weakly-coupled Few-Mode Fiber
Seiya Sumita, Daiki Soma, Shohei Beppu (KDDI Research), Yuta Wakayama (KDDI), Hidenori Takahashi, Takehiro Tsuritani (KDDI Research) PN2018-30
 [more] PN2018-30
pp.49-53
OFT, OCS, IEE-CMN, ITE-BCT [detail] 2017-11-24
15:50
Osaka Kansa-Univ. Umeda Campus 257-Tbit/s Partial MIMO-based 10-Mode C+L-band WDM Transmission
Daiki Soma, Shohei Beppu, Yuta Wakayama (KDDI Research, Inc.), Koji Igarashi (Osaka Univ.), Takehiro Tsuritani (KDDI Research, Inc.) OCS2017-65
Mode-division multiplexing (MDM) transmission technique using a few-mode fiber (FMF) has been investigated to overcome t... [more] OCS2017-65
pp.79-83
OCS, OPE, LQE 2017-10-26
09:45
Kumamoto Josaien, Sakuranobaba Performance evaluation of fiber-coupler-based mode multiplexer for weakly-coupled six-mode multiplexed systems
Koji Igarashi (Osaka Univ.), Yuta Wakayama, Daiki Souma, Takehiro Tsuritani (KDDI Research), Kyung Jun Park, Byoung Yoon Kim (KAIST) OCS2017-36 OPE2017-68 LQE2017-41
(Advance abstract in Japanese is available) [more] OCS2017-36 OPE2017-68 LQE2017-41
pp.1-5
OFT, OCS, LSJ
(Joint) [detail]
2017-08-31
15:55
Hokkaido Hokkaido Univ. 10-Mode-Multiplexed Transmission over 81km Weakly-coupled Few-mode Fiber with Partial MIMO Equalizers
Daiki Soma, Yuta Wakayama (KDDI Research), Koji Igarashi (Osaka Univ.), Takehiro Tsuritani (KDDI Research) OCS2017-25
Mode-division multiplexing (MDM) transmission technique using a few-mode fiber (FMF) is attractive for increasing the tr... [more] OCS2017-25
pp.13-17
OFT, OCS, LSJ
(Joint) [detail]
2017-09-01
11:15
Hokkaido Hokkaido Univ. Experiment on selective mode conversion using dual-phase modulation
Tomohiro Maeda, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.), Yuta Wakayama, Takehiro Tsuritani (KDDI Research) OCS2017-32
For realizing the optical network based on mode division multiplexing, it is necessary to develop the technology which a... [more] OCS2017-32
pp.51-55
OFT, OCS, IEE-CMN, ITE-BCT [detail] 2016-11-11
09:55
Nagasaki Nagasaki Shoko Kaigi Sho Effective Area Measurement of Few-Mode Fiber using Far Field Scan Technique with Hankel Transform for Circularly-Asymmetric Mode
Tetsuya Hayashi, Yoshiaki Tamura, Takuji Nagashima, Kazuhiro Yonezawa, Toshiki Taru (Sumitomo Electric), Koji Igarashi, Daiki Soma, Yuta Wakayama, Takehiro Tsuritani (KDDI Research) OCS2016-60
We report on an Aeff measurement method for the few-mode fiber. We derived an NFP-FFP transform equation generalized for... [more] OCS2016-60
pp.31-36
OFT, OCS, IEE-CMN, ITE-BCT [detail] 2016-11-11
11:10
Nagasaki Nagasaki Shoko Kaigi Sho Study on ultra-dense SDM Transmission over 9.8-km 6-mode 19-core Fiber using DP-16QAM/64QAM Signals
Daiki Soma, Yuta Wakayama, Shohei Beppu (KDDI Research), Koji Igarashi (Osaka Univ.), Takehiro Tsuritani (KDDI Research) OCS2016-63
Space-division multiplexing (SDM) transmission technique using a multi-core fiber (MCF) and few-mode fiber (FMF) is attr... [more] OCS2016-63
pp.49-53
LQE, OPE, OCS 2016-10-27
14:10
Miyazaki Miyazaki Citizen's Plaza [Invited Talk] Experimental Evaluation on Cladding-Pumped Six-Mode EDFA with Large Erbium-Doped Area Fiber
Yuta Wakayama (KDDI Research), Koji Igarashi (Osaka Univ.), Daiki Soma, Hidenori Taga, Takehiro Tsuritani (KDDI Research) OCS2016-39 OPE2016-80 LQE2016-55
Few-mode erbium-doped fiber amplifiers (FM-EDFAs) have been addressed for efficient optical signal amplification in mode... [more] OCS2016-39 OPE2016-80 LQE2016-55
pp.25-29
LQE, OPE, OCS 2016-10-27
14:35
Miyazaki Miyazaki Citizen's Plaza Six-mode multiplexer and demultiplexer using all-fiber-based couplers
Koji Igarashi (KDDI Reseach), Kyung Jun Park (KAIST), Daiki Soma, Yuta Wakayama, Takehiro Tsuritani (KDDI Reseach), Byoung Yoon Kim (KAIST) OCS2016-40 OPE2016-81 LQE2016-56
(Advance abstract in Japanese is available) [more] OCS2016-40 OPE2016-81 LQE2016-56
pp.31-36
OCS, OFT, LSJ
(Joint) [detail]
2016-08-26
10:20
Hokkaido Chitose-alcadia plaza Evaluation for Wavelength Dependence of DMD in a 10-Mode Fiber with Low-Coherence Interferometry
Yuta Wakayama, Daiki Soma (KDDI R&D Labs.), Koji Igarashi (Osaka Univ.), Hidenori Taga, Takehiro Tsuritani (KDDI R&D Labs.) OCS2016-32
In a mode-division multiplexing (MDM) transmission system, transmission performance considerably depends on differential... [more] OCS2016-32
pp.39-42
OCS, OFT, LSJ
(Joint) [detail]
2016-08-26
10:45
Hokkaido Chitose-alcadia plaza Seven-Mode Multiplexed Transmission using Weakly-coupled Few-mode Fiber for Reduction of MIMO Complexity
Daiki Soma, Yuta Wakayama (KDDI R&D Labs.), Koji Igarashi (Osaka Univ.), Takehiro Tsuritani (KDDI R&D Labs.) OCS2016-33
Mode-division multiplexing (MDM) transmission technique using a few-mode fiber (FMF) is attractive for increasing the tr... [more] OCS2016-33
pp.43-46
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