| Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
| OCS, ITE-BCT, OFT, IEE-CMN [detail] |
2019-11-21
15:30 |
Yamaguchi |
Kaikyo-Messe-Shimonoseki |
Performance evaluation of MIMO adaptive equalization with feedback delay in optical coherent reception
Koji Igarashi (Osaka Univ.) |
(Advance abstract in Japanese is available) [more] |
|
| OCS, LQE, OPE |
2019-10-18
09:55 |
Kagoshima |
|
Degradation of Achievable Information Rate due to Phase Noise in Optical Coherent Systems
Sou Chien, Koji Igarashi (Osaka Univ.) |
Achievable information rate (AIR) is perfect tool to evaluate the number of the reliably-transmitted information bits pe... [more] |
OCS2019-41 OPE2019-79 LQE2019-57
pp.73-76 |
OFT, OCS, LSJ
(Joint) [detail] |
2019-08-29
16:10 |
Hokkaido |
|
Real-time MIMO optical receivers for weakly-coupled ten-mode-multiplexed systems
Koji Igarashi (Osaka Univ), Shohei Beppu (KDDI Research), Masahiro Kikuta (NECPF), Tomoyuki Nagai (Osaka Univ), Yasuo Saito (NECPF), Daiki Soma, Takehiro Tsuritani (KDDI Research) |
(Advance abstract in Japanese is available) [more] |
OCS2019-23
pp.17-22 |
OCS, PN, NS
(Joint) |
2019-06-20
11:25 |
Iwate |
MALIOS（Morioka） |
Statistical characteristics of modal coupling at multiple connections of weakly coupled 10 mode fibers
Gen Kawabata, Koji Igarashi (Osaka Univ.) |
(Advance abstract in Japanese is available) [more] |
OCS2019-12
pp.11-15 |
| ITE-BCT, OCS, OFT, IEE-CMN [detail] |
2018-11-08
11:30 |
Okayama |
Kurashiki-City-Geibunnkan |
Statistical Model for Nonlinear Fiber Propagation and Its Application to Nonlinear Compensation for DP-16QAM Optical Signals
Shuai Yuan, Koji Igarashi (Osaka Univ.) |
In this paper, we investigate the statistical characteristics of nonlinear fiber transmission. With the statistical mode... [more] |
OCS2018-53
pp.7-12 |
| ITE-BCT, OCS, OFT, IEE-CMN [detail] |
2018-11-09
15:20 |
Okayama |
Kurashiki-City-Geibunnkan |
Data-Associated Channel Compensation and Carrier Phase Recovery Based on Large-System Limit for PDM System
Seiji Tanaka, Noboru Osawa, Shinsuke Ibi, Koji Igarashi, Seiichi Sampei (Osaka Univ.) |
In PDM systems, polarization demultiplexing and carrier phase recovery (CPR) are required for signal detection.
%
This... [more] |
OCS2018-57
pp.69-74 |
| OPE, LQE, OCS |
2018-10-19
13:05 |
Saga |
|
Optimization of signal amplitudes for dynamic range of analog-to-digital convertor in digital coherent reception of ultra-high QAM optical signals
Yasuhiro Kawabata, Koji Igarashi (Osaka Univ.) |
In the digital coherent reception of ultra-high quadrature amplitude modulation (QAM) optical signals, the received ampl... [more] |
OCS2018-45 OPE2018-81 LQE2018-70
pp.93-97 |
| OPE, LQE, OCS |
2018-10-19
13:30 |
Saga |
|
Performance evaluation of spectrally-synthesized coherent reception for constellation monitoring of pseudo random quadrature phase shift keying optical signals
Naoki Urakawa, Koji Igarashi (Osaka Univ.) |
In our proposed spectrally-synthesized coherent reception for measuring constellation maps of periodical optical signals... [more] |
OCS2018-46 OPE2018-82 LQE2018-71
pp.99-104 |
OCS, OFT, LSJ
(Joint) [detail] |
2018-08-30
14:05 |
Hokkaido |
Hakodate Hokuyo Building 8Kai Hall |
Optimization of core diameter for suppression of modal coupling in few-mode fiber connection
Gen Kawabata, Koji Igarashi (Osaka Univ.) |
The modal couplings can be caused by the misalignment errors in few-mode fiber (FMF) connection. It is one of the most c... [more] |
OCS2018-21
pp.11-14 |
NS, OCS, PN
(Joint) |
2018-06-15
11:15 |
Fukushima |
Koriyama-Shoko-Kaigisho |
Modal crosstalk due to multiple fiber connectors in weakly-coupled few-mode fiber transmission systems
Yuki Yamato, Koji Igarashi (Osaka Univ.) |
(Advance abstract in Japanese is available) [more] |
OCS2018-18
pp.43-47 |
CS, OCS
(Joint) |
2018-01-30
08:50 |
Ehime |
Ehime University |
Feedback-control-free Adaptive Equalization Using Dual-polarization Pilot Tones for Optical Coherent Reception
Tomoki Nishiyama, Shuai Yuan, Koji Igarashi (Osaka Univ.) |
We propose feedback-control-free adaptive equalization for optical coherent receivers. The polarization rotation and the... [more] |
OCS2017-73
pp.37-41 |
CS, OCS
(Joint) |
2018-01-30
09:15 |
Ehime |
Ehime University |
Performance degradation of adaptive equalization due to parallelizing digital signal processing in optical coherent reception
Koji Igarashi (Osaka Univ.) |
(Advance abstract in Japanese is available) [more] |
OCS2017-74
pp.43-48 |
| SIP, IT, RCS |
2018-01-23
11:40 |
Kagawa |
Sunport Hall Takamatsu |
[Invited Lecture]
Digital signal processing in optical fiber transmission systems based on coherent reception
Koji Igarashi (Osaka Univ.) |
[more] |
IT2017-89 SIP2017-97 RCS2017-303
pp.201-206 |
| OFT, OCS, IEE-CMN, ITE-BCT [detail] |
2017-11-23
15:25 |
Osaka |
Kansa-Univ. Umeda Campus |
A Study on EXIT Chart Based Design of Low-Density Parity-Check Codes for Iterative Soft Beat Interference Canceller in Pilot-Assisted Optical-OFDM
Noboru Osawa, Shinsuke Ibi, Koji Igarashi, Seiichi Sampei (Osaka Univ.) |
This paper proposes a low density parity check (LDPC) code design based on extrinsic information transfer (EXIT) chart a... [more] |
OCS2017-60
pp.17-22 |
| 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.) |
Mode-division multiplexing (MDM) transmission technique using a few-mode fiber (FMF) has been investigated to overcome t... [more] |
OCS2017-65
pp.79-83 |
AP, RCS
(Joint) |
2017-11-09
10:50 |
Fukuoka |
Fukuoka University |
[Invited Lecture]
Application of MIMO techniques for high-capacity optical fiber transmission
Koji Igarashi (Osaka Univ.) |
[more] |
AP2017-120 RCS2017-228
pp.65-70(AP), pp.135-140(RCS) |
| 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) |
(Advance abstract in Japanese is available) [more] |
OCS2017-36 OPE2017-68 LQE2017-41
pp.1-5 |
OFT, OCS, LSJ
(Joint) [detail] |
2017-08-31
14:30 |
Hokkaido |
Hokkaido Univ. |
Measurement of Complex Amplitudes of Optical Signal Patterns in the Frequency Domain
Naoki Urakawa, Koji Igarashi (Osaka Univ.) |
We propose a scheme for measuring complex amplitudes of optical signal patterns in the frequency domain. In the coherent... [more] |
OCS2017-23
pp.1-6 |
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) |
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
09:00 |
Hokkaido |
Hokkaido Univ. |
Generation of ultra-high order quadrature amplitude modulation optical signals based on single sideband modulation
Koji Igarashi (Osaka Univ.) |
(Advance abstract in Japanese is available) [more] |
OCS2017-27
pp.25-28 |