A 100Gbaud 4Vppd Distributed Linear Driver with Cross-Folded Transmission Lines and Cross-Coupled Gm Cells for Built-in 5-Tap FFE in 0.13μm SiGe BiCMOS

📋 论文概要

本文提出了一种用于线性可插拔光学模块（LPO）的100Gbaud 4Vppd分布式线性驱动器，采用交叉折叠传输线和交叉耦合Gm单元，实现了低功耗、低成本、低延迟的短距离光通信解决方案。该驱动器具备内置均衡能力，可驱动光调制器进行低失真电光转换。

💡 主要创新点

• 提出交叉折叠传输线结构，在分布式放大器中实现紧凑布局和宽带匹配。
• 采用交叉耦合Gm单元，增强线性度和驱动能力，同时降低功耗。
• 内置均衡功能，无需外部DSP即可补偿信道损耗，适用于LPO系统。

🏷 关键词

📄 原文摘要

Hong Kong University of Science and Technology, Hong Kong, China 1 2 Linear pluggable optics (LPO) emerges as an attractive candidate for short-reach optical communications for its low power consumption, low cost and low latency compared with digital signal processing (DSP)-based solutions. For single-mode fiber applications depicted in the top of Fig. 36.8.1, LPO requires linear drivers with equalization capability to drive optical modulators for low-distortion electrical-to-optical conversion. To increase the extinction ratio of the optical signal, the linear driver is supposed to provide large swing as well as high gain. Moreover, bandwidth is an important concern, as the large swing typically comes with large-size transistors, which bring severe parasitics and degrade the link speed. One method to compensate for those parasitics is using distributed topology [1-3]. The bottom left of Fig. 36.8.1 depicts a typical distributed amplifier as an example, where two

👥 作者与机构

Fuzhan Chen1,2, C. Patrick Yue2, Quan Pan1

Southern University of Science and Technology, Shenzhen, China