A 40Gb/s 8mW-OMA 1-to-N VCSEL Driver for Parallel and Wireless Optical Links Using 150nm GaN HEMT

2026 IEEE International Solid-State Circuits Conference (ISSCC) 2026

View at publisher
Authors: Shuo Sarah Feng, Fuzhan Chen, Ruitao Matthew Ma, Hongyu Bruce Bao, Kangping Zhong, Pak Tao Alan Lau, Chik Patrick Yue
DOI: 10.1109/isscc49663.2026.11409357
Cited by: 1
References: 9

Abstract

This paper presents a 40Gb/s 1-to-N VCSEL driver using 150nm GaN HEMT with fT/fMAXof 50GHz/154GHz. The proposed topology can drive VCSEL arrays in series or parallel without the need of pre-driver, using a common-source main data stage and auxiliary adjustable bias stage for different array configurations. Measured optical eye diagrams show 8mW OMA at 40Gb/s NRZ with 3-tap FFE for 4 VCSELs in series under a 15V supply. The driver consumes 480mW. For PAM-4 input, the driver can support 38Gb/s.

Fields of Study & Subjects

Semiconductor Lasers and Optical Devices Photonic and Optical Devices Optical Network Technologies

Publication details

Journal / source
2026 IEEE International Solid-State Circuits Conference (ISSCC)
Publisher
IEEE
Pages
1–3
Publication date
1 February 2026
Language
EN