JSSC 2020第5期RF & Wireless40nm CMOS与180nm SOI CMOSOptical I/OPAM-4

A 50-Gb-s PAM4 Si-Photonic Transmitter With Digital-Assisted Distributed Driver

一款50Gb/s PAM4硅光发射器，采用数字辅助分布式驱动器和混合集成技术。

50Gb/s PAM4, 40nm CMOS, 180nm SOI CMOS

硅光发射器PAM4分布式放大器马赫-曾德尔调制器时钟数据恢复

▸数字辅助分布式驱动器

▸混合集成40nm CMOS与180nm SOI CMOS

▸无参考时钟数据恢复(CDR)

Abstract

A 50-Gb/s four-level pulse-amplitude modulation (PAM4) silicon photonic transmitter is presented, which is composed of a 40-nm bulk CMOS driver hybrid integrated with a 180-nm silicon-on-insulator (SOI) CMOS Mach–Ze hnder mod- ulator (MZM). To recover and demodulate 50-Gb/s PAM4 data into dual-25-Gb/s nonreturn to zero (NRZ) streams for the co-designed MZM digital-analog converter (DAC), a reference- less clock and data recovery (CDR) is integrated, and to achieve high swing and high speed, the