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Paper Abstract and Keywords
Presentation 2026-02-20 15:00
Optical Link Characteristics of Energy-Efficient 8-Channel VCSEL-Based Optical Transceiver for AI/ML Systems
Sho Yoneyama, Wataru Yoshida, Kazuya Nagashima, Kensho Nishizaki, Hideyuki Nasu (Furukawa Electric Co., Ltd.) OCS2025-70 OFT2025-101 OPE2025-120
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents an energy-efficient wide-bandwidth optical link for AI/ML systems employing an 8‑channel MM VCSEL-based Co-Packaged Optics transceiver. Optical links using 100-m and 310-m OM4 fibers demonstrate 6-dB bandwidth of 26.7 GHz and 19.2 GHz, which are wider than the Nyquist frequencies of 53 Gbaud and 32 Gbaud, respectively. When operating the 150-m OM4 link employing the CPO transceiver with 64-Gb/s PAM4 and 106-Gb/s PAM4 signals, BER characteristics are lower than the targeted FEC-threshold for PCIe 6.0 and IEEE802.3db, respectively. The power efficiency was less than 7.8pJ/bit which is sufficiently lower than the OIF target of 10pJ/bit.
Keyword (in Japanese) (See Japanese page) 
(in English) Co-Packaged Optics / Linear-Drive Optics / PAM4 / PCIe / 800GbE / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 362, OPE2025-120, pp. 100-103, Feb. 2026.
Paper # OPE2025-120 
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 OCS2025-70 OFT2025-101 OPE2025-120

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) Optical Link Characteristics of Energy-Efficient 8-Channel VCSEL-Based Optical Transceiver for AI/ML Systems 
Sub Title (in English)  
Keyword(1) Co-Packaged Optics  
Keyword(2) Linear-Drive Optics  
Keyword(3) PAM4  
Keyword(4) PCIe  
Keyword(5) 800GbE  
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Keyword(8)  
1st Author's Name Sho Yoneyama  
1st Author's Affiliation Furukawa Electric Co., Ltd. (Furukawa Electric Co., Ltd.)
2nd Author's Name Wataru Yoshida  
2nd Author's Affiliation Furukawa Electric Co., Ltd. (Furukawa Electric Co., Ltd.)
3rd Author's Name Kazuya Nagashima  
3rd Author's Affiliation Furukawa Electric Co., Ltd. (Furukawa Electric Co., Ltd.)
4th Author's Name Kensho Nishizaki  
4th Author's Affiliation Furukawa Electric Co., Ltd. (Furukawa Electric Co., Ltd.)
5th Author's Name Hideyuki Nasu  
5th Author's Affiliation Furukawa Electric Co., Ltd. (Furukawa Electric Co., Ltd.)
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Speaker Author-1 
Date Time 2026-02-20 15:00:00 
Presentation Time 25 minutes 
Registration for OPE 
Paper # OCS2025-70, OFT2025-101, OPE2025-120 
Volume (vol) vol.125 
Number (no) no.360(OCS), no.361(OFT), no.362(OPE) 
Page pp.54-57(OCS), pp.76-79(OFT), pp.100-103(OPE) 
#Pages 4 
Date of Issue 2026-02-12 (OCS, OFT, OPE) 

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