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All Technical Committee Conferences (All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OCS, PN, NS (Joint) |
2022-06-10 13:00 |
Online | Online | Spectrally-Slicing-and-Synthesizing Measurement for Complex Field Waveforms of 100-GHz Optical Frequency Combs Yusuke Shimizu, Tsubasa Fujiwara, Koji Igarashi (Osaka Univ.)  OCS2022-10 |
[more] | OCS2022-10 pp.1-5 |
| RCS | 2022-04-22 11:20 |
Osaka | Osaka University, and online (Primary: On-site, Secondary: Online) |
A Study on Parametric Bilinear Inference via Gaussian Belief Propagation Kenta Ito, Takumi Takahashi, Koji Igarashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.) RCS2022-8 |
Parametric bilinear inference estimates two unknown varables (i.e., parameters) with a symmetric linear regression struc... [more] | RCS2022-8 pp.35-40 |
| OPE, OFT, OCS (Joint) [detail] |
2022-02-25 13:30 |
Online | Online | Measuring Jones matrices representing mode couplings in few mode fibers Ryotaro Fukunaga, Koji Igarashi (Osaka Univ.) OCS2021-50 OPE2021-65 |
The mode dispersion in few-mode fibers (FMFs) determines the transmission performance of the mode multiplexed systems. I... [more] | OCS2021-50 OPE2021-65 pp.46-50(OCS), pp.84-88(OPE) |
| PN, MWP, EMT, PEM, IEE-EMT [detail] | 2022-01-28 09:25 |
Online | Online | Control of SDN optical networks using public cloud container services Hayato Kiwata, Koji Igarashi (Osaka Univ), Noboru Yoshikane (KDDI Research) PN2021-41 EMT2021-57 MWP2021-46 |
In this work, we propose a method for controlling SDN optical network using container virtualization in public cloud ser... [more] | PN2021-41 EMT2021-57 MWP2021-46 pp.46-50 |
| RCS, SIP, IT | 2022-01-20 17:20 |
Online | Online | A Study on AoA Estimation-Aided Bayesian Receiver Design via Bilinear Inference for mmWave Large MIMO Kenta Ito, Takumi Takahashi, Koji Igarashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.) IT2021-58 SIP2021-66 RCS2021-226 |
We propose a novel joint channel and data estimation (JCDE) scheme for mmWave large multi-user multi-input multi-output ... [more] | IT2021-58 SIP2021-66 RCS2021-226 pp.167-172 |
| OFT, OCS, IEE-CMN, ITE-BCT [detail] | 2021-11-19 10:00 |
Online | Online | Relationship between Polarization Mode Dispersion and Impulse Response Spread in Dual-polarization/Mode-multiplexed Coherent Transmission Systems Eidai Sunamoto, Ryotaro Fukunaga, Koji Igarashi (Osaka Univ.) OFT2021-51 |
In coherent optical fiber transmission systems with dual-polarization multiplexing and/or mode multiplexing, efficient d... [more] | OFT2021-51 pp.1-6 |
| OFT, OCS, IEE-CMN, ITE-BCT [detail] | 2021-11-19 13:00 |
Online | Online | Application of Soft-Decision FEC to Pre-Amplified Direct Detection with Four-Level Pulse Amplitude Modulation Koji Igarashi, Takumi Takahashi (Osaka Univ.) OCS2021-30 |
(Advance abstract in Japanese is available) [more] | OCS2021-30 pp.9-14 |
| OFT, OCS, IEE-CMN, ITE-BCT [detail] | 2021-11-19 13:25 |
Online | Online | Four-mode multiplexed real-time 16QAM transmission using high-accuracy frequency offset estimation algorithm Shohei Beppu (KDDI Research, Inc.), Masahiro Kikuta (NEC Platforms, Ltd.), Koji Igarashi (Osaka University), Hiroshi Mukai, Masahiro Shigihara (NEC Platforms, Ltd.), Daiki Soma, Hidenori Takahashi, Noboru Yoshikane, Takehiro Tsuritani (KDDI Research, Inc.) OCS2021-31 |
Mode-division-multiplexed (MDM) transmission systems with multiple-input multiple-output digital signal processing (MIMO... [more] | OCS2021-31 pp.15-20 |
| OFT, ITE-BCT, OCS, IEE-CMN [detail] | 2020-11-12 14:35 |
Online | Online | Modeling of couplings between two degenerate linearly-polarized modes based on dual three-dimensional Stokes Space Ryotaro Fukunaga, Koji Igarashi (Osaka Univ.) OFT2020-39 |
In mode-division-multiplexed transmission in multi-mode fibers (MMFs), it is essential to compensate for couplings betwe... [more] | OFT2020-39 pp.11-16 |
| OPE, OCS, LQE | 2020-10-23 11:10 |
Online | Online | Real-time strongly-coupled 4-core fiber transmission Shohei Beppu (KDDI Research, Inc.), Koji Igarashi (Osaka University), Hiroshi Mukai, Masahiro Kikuta, Masahiro Shigihara (NEC Platforms, Ltd.), Daiki Soma, Hidenori Takahashi, Noboru Yoshikane, Takehiro Tsuritani (KDDI Research, Inc.) OCS2020-12 OPE2020-35 LQE2020-15 |
[more] | OCS2020-12 OPE2020-35 LQE2020-15 pp.21-25 |
| CS, OCS (Joint) |
2020-01-16 11:40 |
Oita | Beppu Housensou Hotel (Oita Pref.) | Performance evaluation of spectrally slicing and synthesizing method for measuring complex field waveforms of optical QAM signals Yasuhiro Kawabata, Koji Igarashi (Osaka Univ.) OCS2019-69 |
Measuring complex amplitude of optical signals is one of essential techniques in optical coherent quadrature amplitude m... [more] | OCS2019-69 pp.25-30 |
| OCS, ITE-BCT, OFT, IEE-CMN [detail] | 2019-11-21 15:30 |
Yamaguchi | Kaikyo-Messe-Shimonoseki | Performance evaluation of MIMO adaptive equalization with update delay in optical coherent reception Koji Igarashi (Osaka Univ.) OCS2019-60 |
(Advance abstract in Japanese is available) [more] | OCS2019-60 pp.19-23 |
| OCS, LQE, OPE | 2019-10-18 09:55 |
Kagoshima | Degradation of Achievable Information Rate due to Phase Noise in Optical Coherent Systems Song Zhiyuan, Koji Igarashi (Osaka Univ.) OCS2019-41 OPE2019-79 LQE2019-57 |
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) OCS2019-23 |
(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.) OCS2019-12 |
(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.) OCS2018-53 |
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.) OCS2018-57 |
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.) OCS2018-45 OPE2018-81 LQE2018-70 |
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.) OCS2018-46 OPE2018-82 LQE2018-71 |
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.) OCS2018-21 |
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 |
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