Integrated solid-state lidar employing orthogonal polarizations and counterpropagation[Invited]  

作　　者：Yuxuan He Qiang Wang Xu Han Zhonghan Wang Yuxi Fang Wenpu Geng Fei Yang Zhongqi Pan Yang Yue 贺宇萱;王强;韩旭;王忠汉;方宇熙;耿文璞;杨飞;潘仲琦;岳洋(Institute of Modern Optics,Nankai University,Tianjin 300350,China;Angle AI(Tianjin)Technology Co.,Ltd.,Tianjin 300450,China;School of Information and Communications Engineering,Xi’an Jiaotong University,Xi’an 710049,China;China Academy of Space Technology(Xi’an),Xi’an 710000,China;Department of Electrical&Computer Engineering,University of Louisiana at Lafayette,Lafayette 70504,USA)

机构地区：[1]Institute of Modern Optics,Nankai University,Tianjin 300350,China [2]Angle AITechnology Co.,Ltd.,Tianjin 300450,China [3]School of Information and Communications Engineering,Xi’an Jiaotong University,Xi’an 710049,China [4]China Academy of Space Technology,Xi’an 710000,China [5]Department of Electrical&Computer Engineering,University of Louisiana at Lafayette,Lafayette 70504,USA

出　　处：《Chinese Optics Letters》2024年第9期54-67,共14页中国光学快报（英文版）

基　　金：supported by the Shaanxi Province Innovation Talent Promotion Program Science and Technology Innovation Team(No.2023-CX-TD-03);the Natural Science Foundation of Shaanxi Province(No.2023-JC-YB-587);the National Key Research and Development Program of China(No.2019YFB1803700);the Key Technologies Research and Development Program of Tianjin(No.20YFZCGX00440).

摘　　要：Light detection and ranging(lidar)has attracted significant interest as a sensing technology for its ability to achieve highresolution imaging and wide-angle perception.However,conventional lidar systems,built with separate components,are often bulky,expensive,complex,and prone to instability.In contrast,solid-state lidar,based on silicon photonics technology,offers a solution with its compact size,less expense,low energy consumption,and improved reliability.However,achieving precise beam steering remains a critical challenge for integrated lidar systems.Various methods have been demonstrated for beam steering,which is one of the simplest and most efficient approaches that utilize wavelength tuning with a grating coupler antenna.In this review,we introduce the fundamental principle of optical phased array for beam steering and provide an overview of the recent advancements in integrated solid-state lidars utilizing orthogonal polarizations and counterpropagation to enhance beam-steering range and angular resolution.

关 键 词：beam steering GRATING wavelength division multiplexing silicon photonics 

分 类 号：TN958.98[电子电信—信号与信息处理]