학술논문
A Scalable 32-to-56Gb/s 0.56-to-1.28pJ/b Voltage-Mode VCSEL-Based Optical Transmitter in 28nm CMOS
Document Type
Conference
Author
Source
2021 IEEE Custom Integrated Circuits Conference (CICC) Custom Integrated Circuits Conference (CICC), 2021 IEEE. :1-2 Apr, 2021
Subject
Language
ISSN
2152-3630
Abstract
As data rates continue to increase, the reach of electrical interconnects is becoming shorter due to loss and distortion of the signal. Optical interconnects based on vertical-cavity surface-emitting lasers (VCSELs) provide a cost-effective solution to transfer data over tens of meters in data centers. However, integrating optical transceivers within a server platform requires improved bandwidth density and energy efficiency. High data-rate, compact area, and energy-efficient transmitter (TX) circuits that mitigate VCSEL nonlinearity and bandwidth limitations are key enablers of this integration. This paper presents an optical TX implemented in 28nm bulk CMOS which drives an 850nm VCSEL up to 56Gb/s.