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Paper Abstract and Keywords
Presentation 2025-10-24 13:35
Temperature Dependence Adjuster for Fabrication Errors in Athermal Mach-Zehnder Filters
Junichi Suzuki, Kiyotomo Hasegawa, Kei Masuyama, Nobuo Ohata (Mitsubishi Electric) OCS2025-42 OPE2025-89 LQE2025-44
Abstract (in Japanese) (See Japanese page) 
(in English) The temperature dependence of the filter characteristics cannot be ignored in a wavelength locker for digital coherent applications using a silicon photonics chip. While it is possible to create a Mach–Zehnder filter with reduced temperature dependence by using waveguides with different refractive index temperature dependencies, fabrication errors could make it difficult to achieve the higher-precision characteristics of less than ±0.01 GHz/K required for TEC-free operation in future applications. In this paper, we propose a temperature dependence adjuster that uses an external signal after fabrication to compensate for residual temperature dependence that cannot be eliminated due to manufacturing variations. By simulating the proposed structure, we have confirmed that our device can sufficiently compensate for the residual temperature dependence of 0.17 GHz/K obtained from the fabricated device.
Keyword (in Japanese) (See Japanese page) 
(in English) Wavelength locker / Silicon photonics / Mach-Zehnder filter / / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 213, LQE2025-44, pp. 88-91, Oct. 2025.
Paper # LQE2025-44 
Date of Issue 2025-10-16 (OCS, OPE, LQE) 
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 OCS2025-42 OPE2025-89 LQE2025-44

Conference Information
Committee OCS OPE LQE  
Conference Date 2025-10-23 - 2025-10-24 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To LQE 
Conference Code 2025-10-OCS-OPE-LQE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Temperature Dependence Adjuster for Fabrication Errors in Athermal Mach-Zehnder Filters 
Sub Title (in English)  
Keyword(1) Wavelength locker  
Keyword(2) Silicon photonics  
Keyword(3) Mach-Zehnder filter  
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1st Author's Name Junichi Suzuki  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
2nd Author's Name Kiyotomo Hasegawa  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
3rd Author's Name Kei Masuyama  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
4th Author's Name Nobuo Ohata  
4th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
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Speaker Author-1 
Date Time 2025-10-24 13:35:00 
Presentation Time 25 minutes 
Registration for LQE 
Paper # OCS2025-42, OPE2025-89, LQE2025-44 
Volume (vol) vol.125 
Number (no) no.211(OCS), no.212(OPE), no.213(LQE) 
Page pp.88-91 
#Pages 4 
Date of Issue 2025-10-16 (OCS, OPE, LQE) 

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