A 1024-Element Scalable Optical Phased Array in 0.18µm SOI CMOS

📋 论文概要

本文实现了一个1024单元的可扩展光学相控阵，采用0.18µm SOI CMOS工艺，用于激光雷达（Lidar）系统中的光学波束控制。该设计解决了传统机械式激光雷达体积大、成本高、易出故障的问题，提供了一种低成本、高可靠性的固态光束扫描方案。

💡 主要创新点

• 首次在0.18µm SOI CMOS工艺上实现1024单元的大规模光学相控阵，展示了高集成度与可扩展性。
• 采用可扩展架构，支持单元数量的灵活增加，适用于不同应用场景的激光雷达系统。
• 基于CMOS工艺实现了低成本、高可靠性的固态光学波束控制，替代传统机械扫描方案。

🏷 关键词

📄 原文摘要

Self-driving cars, drones, and other autonomous systems rely on a number of sensors such as cameras, radars, and ultrasonic detectors to observe their surrounding environments. Light detection and ranging (lidar), where a laser beam is rapidly steered in space, is among the most accurate sensors and enables creation of high-resolution 3D maps. Existing lidar systems are based on mechanical optical beam steering, and as such, are bulky, expensive, susceptible to mechanical failures, and consume large power. Electronic phased arrays, historically developed for defense and aerospace systems, are now becoming commonplace in automotive radars and mm-wave commercial wireless communications. Advancement in semiconductor nanofabrication processing has enabled the realization of complex optical integrated circuits such as monolithic optical phased arrays [1-7]. In conventional N 2-element optical phased arrays, a laser beam is coupled to the chip, split to N 2

👥 作者与机构

SungWon Chung, Hooman Abediasl, Hossein Hashemi

University of Southern California, Los Angeles, CA