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Paper Abstract and Keywords
Presentation 2026-07-09 14:55
Design of Planar-Lightwave-Circuit Based Six-Mode Exchanger Using Cascaded Y-Branch Structures and Mode Add/Drop Filters
Yuta Yamanouchi, Takanori Sato (Hokkaido Univ), Masaki Wada, Taro Iwaya, Takashi Matsui, Kazuhide Nakajika (NTT), Kunimasa Saitoh (Hokkaido Univ) EMT2026-26 MW2026-49 OPE2026-32 EST2026-30 MWPTHz2026-41
Abstract (in Japanese) (See Japanese page) 
(in English) Mode division multiplexing (MDM) technology is attracting significant attention to expand transmission capacity. In MDM transmission, reducing mode-dependent loss (MDL) is a critical challenge, and a system configuration incorporating a silica-based planar lightwave circuit (PLC) type mode exchanger into the transmission path is a promising solution. In this paper, we propose a novel PLC-based six-mode exchanger that combines a mode add/drop filter using a bridge coupler with directional couplers of different waveguide heights, and a cascaded Y-branch structure. We investigate the insertion loss and MDL characteristics of the device in the C-band using beam propagation method (BPM) analysis, and evaluate its performance in comparison with a conventional six-mode exchanger.
Keyword (in Japanese) (See Japanese page) 
(in English) Planar Lightwave Circuit / Mode Division Multiplexing / Mode Exchanger / Y-branch / Add/Drop Filter / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 98, OPE2026-32, pp. 120-125, July 2026.
Paper # OPE2026-32 
Date of Issue 2026-07-02 (EMT, MW, OPE, EST, MWPTHz) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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)
Download PDF EMT2026-26 MW2026-49 OPE2026-32 EST2026-30 MWPTHz2026-41

Conference Information
Committee OPE EST MWPTHz MW EMT IEE-EMT  
Conference Date 2026-07-09 - 2026-07-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Kushiro Chamber of Commerce and Industry 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Workshop on Optical and Microwave technologies 
Paper Information
Registration To OPE 
Conference Code 2026-07-OPE-EST-MWPTHz-MW-EMT-EMT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design of Planar-Lightwave-Circuit Based Six-Mode Exchanger Using Cascaded Y-Branch Structures and Mode Add/Drop Filters 
Sub Title (in English)  
Keyword(1) Planar Lightwave Circuit  
Keyword(2) Mode Division Multiplexing  
Keyword(3) Mode Exchanger  
Keyword(4) Y-branch  
Keyword(5) Add/Drop Filter  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yuta Yamanouchi  
1st Author's Affiliation Hokkaido University (Hokkaido Univ)
2nd Author's Name Takanori Sato  
2nd Author's Affiliation Hokkaido University (Hokkaido Univ)
3rd Author's Name Masaki Wada  
3rd Author's Affiliation NTT, Inc. (NTT)
4th Author's Name Taro Iwaya  
4th Author's Affiliation NTT, Inc. (NTT)
5th Author's Name Takashi Matsui  
5th Author's Affiliation NTT, Inc. (NTT)
6th Author's Name Kazuhide Nakajika  
6th Author's Affiliation NTT, Inc. (NTT)
7th Author's Name Kunimasa Saitoh  
7th Author's Affiliation Hokkaido University (Hokkaido Univ)
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Speaker Author-1 
Date Time 2026-07-09 14:55:00 
Presentation Time 25 minutes 
Registration for OPE 
Paper # EMT2026-26, MW2026-49, OPE2026-32, EST2026-30, MWPTHz2026-41 
Volume (vol) vol.126 
Number (no) no.96(EMT), no.97(MW), no.98(OPE), no.99(EST), no.100(MWPTHz) 
Page pp.120-125 
#Pages 6 
Date of Issue 2026-07-02 (EMT, MW, OPE, EST, MWPTHz) 

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