A 1.54pJ/b 64Gb/s 16-QAM Intradyne Coherent Optical Receiver in 28nm CMOS

📋 论文概要

该论文提出了一种基于28nm CMOS工艺的64Gb/s 16-QAM内差相干光接收机，通过创新的DSP技术解决了短距离光链路中非相干格式扩展困难的问题，实现了高数据吞吐量和低功耗。

💡 主要创新点

• 采用内差相干检测架构结合16-QAM调制，显著提升数据吞吐量。
• 开发了先进的数字信号处理技术，用于精确的偏振、相位和符号定时恢复。
• 实现了1.54pJ/b的超低能耗，适用于数据中心高密度互连。

🏷 关键词

📄 原文摘要

Mohamed Saad Aly, Mahmoud A. Khalil, Pavan Kumar Hanumolu University of Illinois, Urbana, IL As the demand for high-speed data transmission within data centers continues to grow, scaling existing short-reach optical links that rely on noncoherent formats like on-off keying and PAM-4 will become increasingly difficult or even unfeasible. Coherent detection systems, particularly those using higher-order modulation formats such as 16-QAM, offer significantly greater data throughput but require advanced digital signal processing (DSP) techniques for precise polarization, phase, and symbol timing recovery. Although these DSP techniques are effective, they lead to considerable power consumption, which poses challenges for integration within the power constraints of short-reach applications [1]. This has sparked a growing interest in low-complexity analog-based coherent receivers, with various QPSK receiver architectures being reported [2–4]. While 16-QAM theoretically

👥 作者与机构

Ahmed E. Abdelrahman, Mohamed Badr Younis, Mohamed Osama Selim,