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Paper Abstract and Keywords
Presentation 2026-02-19 15:35
Miniaturization of 1x2 and 1x4 Branched Multimode Polymer Optical Waveguide for MUX Device in SWDM Links
Koki Atsumi, Takaaki Ishigure (Keio Univ.) OCS2025-63 OFT2025-87 OPE2025-104
Abstract (in Japanese) (See Japanese page) 
(in English) Branched multimode polymer optical waveguides have been proposed as on-board multiplexers （MUX） for Shortwave Wavelength Division Multiplexing （SWDM） in VCSEL/MMF links. In this study, we achieve significant miniaturization of 1x2 branched and 2-dimensional （2D） 1x4 branched polymer optical waveguides using the Mosquito method by optimizing needle scanning paths. Furthermore, we fabricate a compact 3-dimensional （3D） 1x4 branched polymer optical waveguide by employing a unique structure that couples four cores at a single junction. We evaluate the performance of these waveguides for an application to MUX devices.
Keyword (in Japanese) (See Japanese page) 
(in English) The Mosquito method / SWDM / MUX / Branched waveguide / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 362, OPE2025-104, pp. 21-26, Feb. 2026.
Paper # OPE2025-104 
Date of Issue 2026-02-12 (OCS, OFT, OPE) 
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 OCS2025-63 OFT2025-87 OPE2025-104

Conference Information
Committee OCS OFT OPE  
Conference Date 2026-02-19 - 2026-02-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Minna-No-Kashikaigishitsu Naha-Asahimachi-Ten 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OPE 
Conference Code 2026-02-OCS-OFT-OPE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Miniaturization of 1x2 and 1x4 Branched Multimode Polymer Optical Waveguide for MUX Device in SWDM Links 
Sub Title (in English)  
Keyword(1) The Mosquito method  
Keyword(2) SWDM  
Keyword(3) MUX  
Keyword(4) Branched waveguide  
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1st Author's Name Koki Atsumi  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Takaaki Ishigure  
2nd Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2026-02-19 15:35:00 
Presentation Time 25 minutes 
Registration for OPE 
Paper # OCS2025-63, OFT2025-87, OPE2025-104 
Volume (vol) vol.125 
Number (no) no.360(OCS), no.361(OFT), no.362(OPE) 
Page pp.15-20(OCS), pp.7-12(OFT), pp.21-26(OPE) 
#Pages 6 
Date of Issue 2026-02-12 (OCS, OFT, OPE) 

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