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Paper Abstract and Keywords
Presentation 2022-11-11 14:50
All-optical PAM4 to QPSK and 16QAM Conversions Using Si-rich Nitride Waveguides
Yuto Fujihara, Ken Mishina, Asahi Sueyoshi, Akihiro Maruta (Osaka Univ.) OCS2022-48
Abstract (in Japanese) (See Japanese page) 
(in English) All-optical modulation format conversion, which is performed only in the optical domain, has been proposed as a promising technique for efficiently connecting networks with different modulation formats. For inter-data center communication, all-optical PAM4/QPSK and PAM4/16QAM conversions using highly nonlinear fiber (HNLF) have been proposed. However, HNLF is not applicable to photonic integrated circuits (PICs). In this paper, we propose all-optical PAM4/QPSK and PAM4/16QAM conversions using optically integrated silicon-rich nitride (SRN) waveguides, which can be fabricated cost-effectively on PICs. Subsequently, we demonstrate successful modulation format conversions to 50-Gbps-class QPSK and 100-Gbps-class 16QAM signals by numerical simulation.
Keyword (in Japanese) (See Japanese page) 
(in English) all-optical signal processing / modulation format conversion / nonlinear optical effect / silicon photonics / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 245, OCS2022-48, pp. 46-51, Nov. 2022.
Paper # OCS2022-48 
Date of Issue 2022-11-03 (OCS) 
ISSN 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 2022-11-10 - 2022-11-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Forest-Sendai 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OCS 
Conference Code 2022-11-BCT-OCS-CMN-OFT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) All-optical PAM4 to QPSK and 16QAM Conversions Using Si-rich Nitride Waveguides 
Sub Title (in English)  
Keyword(1) all-optical signal processing  
Keyword(2) modulation format conversion  
Keyword(3) nonlinear optical effect  
Keyword(4) silicon photonics  
1st Author's Name Yuto Fujihara  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Ken Mishina  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Asahi Sueyoshi  
3rd Author's Affiliation Osaka University (Osaka Univ.)
4th Author's Name Akihiro Maruta  
4th Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2022-11-11 14:50:00 
Presentation Time 25 minutes 
Registration for OCS 
Paper # OCS2022-48 
Volume (vol) vol.122 
Number (no) no.245 
Page pp.46-51 
Date of Issue 2022-11-03 (OCS) 

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