A 40Gb/s PAM-4 Transmitter Based on a RingResonator Optical DAC in 45nm SOI CMOS

📋 论文概要

该论文提出了一种基于环形谐振器光学DAC的40Gb/s PAM-4发射机，采用未修改的45nm SOI CMOS工艺实现硅光子链路，解决了传统电光调制器功耗高、集成度低的问题。

💡 主要创新点

• 利用环形谐振器作为光学数模转换器（DAC），直接生成PAM-4光信号，避免了复杂的电学DAC和调制器驱动。
• 在标准45nm SOI CMOS工艺中集成硅光子器件，无需额外工艺修改，降低了制造成本和复杂度。
• 实现了40Gb/s的高速PAM-4传输，展示了硅光子学在数据中心互连中的潜力。

🏷 关键词

📄 原文摘要

Milos A. Popovic5, Vladimir Stojanovic1 University of California, Berkeley, CA Ayar Labs, San Francisco, CA 3 ETH Zurich, Zurich, Switzerland 4 Massachusetts Institute of Technology, Cambridge, MA 5 Boston University, Boston, MA 1 2 Silicon photonics is a rapidly maturing technology, promising to realize low-cost and energy-efficient optical links for rack-to-rack, within-rack datacenter applications, and supercomputer interconnects. Recently, the possibility of implementing ultra-power-efficient silicon photonic links using an unmodified state-of-the-art 45nm SOI CMOS process has been demonstrated [1]. This approach enabled the fabrication of millions of transistors and hundreds of photonic devices in the same chip to improve processor-memory link bandwidth, and opened a path to solving this traditional computation bottleneck. This paper demonstrates the capability of implementing high-speed optical

👥 作者与机构

Sajjad Moazeni1, Sen Lin1, Mark T. Wade2, Luca Alloatti3, Rajeev J. Ram4,