采用45纳米互补金属氧化物半导体-硅光子工艺的单片集成112 Gbps四电平脉冲幅度调制光发射机和接收机。

Monolithically integrated 112 Gbps PAM4 optical transmitter and receiver in a 45 nm CMOS-silicon photonics process.

作者信息

Baehr-Jones Thomas, Ardalan Shahab, Chang Matthew, Jafarlou Saman, Serey Xavier, Zarris George, Thompson Gabriel, Darbinian Artsroun, West Brian, Behnia Babak, Velev Vesselin, Li Yun Zhe, Roelofs Katherine, Wu Wuchun, Mali Jim, Zhan Jiahao, Ophir Noam, Horng Chris, Narevich Romanas, Guan Fen, Yang Jinghui, Wu Hao, Maupin Patrick, Manley Rhys, Ahuja Yogi, Novack Ari, Wang Lei, Streshinsky Matthew

出版信息

Opt Express. 2023 Jul 17;31(15):24926-24938. doi: 10.1364/OE.495246.

DOI:10.1364/OE.495246

PMID:37475308

Abstract

We demonstrate a transmitter and receiver in a silicon photonics platform for O-band optical communication that monolithically incorporates a modulator driver, traveling-wave Mach-Zehnder modulator, control circuitry, photodetector, and transimpedance amplifier (TIA) in the GlobalFoundries Fotonix (45SPCLO) platform. The transmitter and receiver show an open 112 Gbps PAM4 eye at a 4.3 pJ/bit energy efficiency, not including the laser. Extensive use of gain-peaking enables our modulator driver and TIA to achieve the high bandwidths needed in the 45 nm CMOS-silicon photonics process. Our results suggest an alternative to the frequent approach of bump-bonding BiCMOS drivers and TIAs to silicon photonics.

摘要

我们展示了一种用于O波段光通信的硅光子学平台中的发射器和接收器，该平台在格芯Fotonix（45SPCLO）平台中单片集成了调制器驱动器、行波马赫-曾德尔调制器、控制电路、光电探测器和跨阻放大器（TIA）。该发射器和接收器在不包括激光器的情况下，以4.3 pJ/比特的能量效率展示了一个开放的112 Gbps PAM4眼图。增益峰值的广泛应用使我们的调制器驱动器和TIA能够在45纳米CMOS-硅光子学工艺中实现所需的高带宽。我们的结果为将BiCMOS驱动器和TIA凸点键合到硅光子学的常用方法提供了一种替代方案。