JSSC 2024第10期RF & Wireless180nm SiGe BiCMOSEqualizerPAM-4

A 4 112 Gbs PAM-4 Silicon-Photonic Transmitter and Receiver Chipsets for Linear

一款4×112 Gb/s硅光收发芯片组，用于线性驱动共封装光学应用。

180nm SiGe BiCMOS, 35GHz带宽, 112Gb/s PAM-4, 4.8pJ/bit(OTX), 2.95pJ/bit(ORX)

硅光子共封装光学PAM-4线性驱动器连续时间线性均衡器

▸四通道开集驱动器与阵列行波马赫-曾德尔调制器协同设计

▸二阶混合被动-主动连续时间线性均衡器补偿非线性信道损耗

▸采用T-π输入网络和级联嵌入式CTLE的线性跨阻放大器

Abstract

A 4 × 112 Gb/s hybrid-integrated silicon pho- tonic (SiPh) transmitter and receiver chipsets are presented for the linear-drive co-packaged optics (CPO). A quad-channel open-collector (OC) driver is co-designed with the arrayed traveling-wave (TW) Mach–Zehnder modulator (MZM) for high bandwidth (BW) and high efficiency. A second-order hybrid passive–active continuous-time linear equalizer (CTLE) is pro- posed to compensate for the nonlinear channel loss up to 12 dB. A linear trans-impedance ampl