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Paper Abstract and Keywords
Presentation 2017-11-24 15:50
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
Abstract (in Japanese) (See Japanese page) 
(in English) Mode-division multiplexing (MDM) transmission technique using a few-mode fiber (FMF) has been investigated to overcome the theoretical limitation of transmission capacity in a single mode fiber. Recently, the maximum capacity of 115 Tbit/s in 10-mode transmission over 87-km FMF has been reported. In this experiment, 20x20 multiple-input multiple-output (MIMO) signal processing are required in order to compensate for the modal crosstalk (XT) between 10 modes. To reduce the MIMO matrix size, the partial MIMO-based weakly-coupled MDM transmission has been proposed. This technique can mitigate the burden of MIMO processing for high-order FMF transmission. In this paper, firstly, we show the modal XT can be sufficiently suppressed over C+L-band using a weakly-coupled FMF and highly mode-selective multiplexer/de-multiplexer. Then a 10-mode-multiplexed 336-WDM transmission of dual-carrier 12-Gbaud DP (dual polarization)-QPSK (quadrature phase shift keying) signals over 48-km weakly-coupled FMF only using the 2x2 or 4x4 partial MIMOs is demonstrated. In this experiment, we achieve the record fiber capacity of 257-Tbps with the aggregate spectral efficiency of 30.5 bit/s/Hz in single-core fiber transmission.
Keyword (in Japanese) (See Japanese page) 
(in English) Space-division multiplexing / Mode division multiplexing / Weakly-coupled / Few-mode fiber / Multiple-input multiple-output / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 322, OCS2017-65, pp. 79-83, Nov. 2017.
Paper # OCS2017-65 
Date of Issue 2017-11-16 (OCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Conference Date 2017-11-23 - 2017-11-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Kansa-Univ. Umeda Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OCS 
Conference Code 2017-11-OFT-OCS-CMN-BCT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) 257-Tbit/s Partial MIMO-based 10-Mode C+L-band WDM Transmission 
Sub Title (in English)  
Keyword(1) Space-division multiplexing  
Keyword(2) Mode division multiplexing  
Keyword(3) Weakly-coupled  
Keyword(4) Few-mode fiber  
Keyword(5) Multiple-input multiple-output  
1st Author's Name Daiki Soma  
1st Author's Affiliation KDDI Research, Inc. (KDDI Research, Inc.)
2nd Author's Name Shohei Beppu  
2nd Author's Affiliation KDDI Research, Inc. (KDDI Research, Inc.)
3rd Author's Name Yuta Wakayama  
3rd Author's Affiliation KDDI Research, Inc. (KDDI Research, Inc.)
4th Author's Name Koji Igarashi  
4th Author's Affiliation Osaka University (Osaka Univ.)
5th Author's Name Takehiro Tsuritani  
5th Author's Affiliation KDDI Research, Inc. (KDDI Research, Inc.)
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Date Time 2017-11-24 15:50:00 
Presentation Time 25 
Registration for OCS 
Paper # OCS2017-65 
Volume (vol) 117 
Number (no) no.322 
Page pp.79-83 
Date of Issue 2017-11-16 (OCS) 

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