Optical Receivers Using DFE-IIR Equalization

📋 论文概要

该论文提出了一种采用判决反馈均衡和无限脉冲响应均衡（DFE-IIR）的光接收器，用于解决高速光互连中的符号间干扰问题。通过结合DFE与IIR滤波器，实现了低功耗、高灵敏度的光接收，适用于芯片间光互连。

💡 主要创新点

• 将DFE与IIR均衡结合用于光接收器，相比传统均衡器更有效地补偿信道失真。
• 针对硅光子学平台设计，在保持高灵敏度的同时实现低功耗，适用于未来高带宽计算系统。

🏷 关键词

📄 原文摘要

Future computing systems will require increasingly high bandwidth to supply data to microprocessors, FPGAs, and other computational blocks [1,2]. Increasing data rate is a common solution, as I/O pad density is not scaling with bandwidth requirements. Copper interconnect has increasingly high loss with frequency, requiring complex, power-hungry equalization to overcome the channel response at high data rates. In contrast, optical interconnect can transport signals over long distances without complex equalization. Chip-to-chip optical interconnect will require sensitive, low-power, clocked receiver (RX) circuits that operate at high data rates. Conventional TIA-based RXs [1,2] require high power to maximize gain and minimize noise while maintaining high BW. A low-noise, low-BW, low-power TIA is combined with a 2-tap DFE to achieve high sensitivity in [3], but the data rate is 4Gb/s and limited dynamic range is demonstrated.

👥 作者与机构

Jonathan Proesel, Alexander Rylyakov, Clint Schow

IBM Research, Yorktown Heights, NY