Butler matrix enabled multi-beam optical phased array for two-dimensional beam-steering and ranging  

作　　者：ZUOYU ZHOU WEIHAN XU CHUXIN LIU RUIYANG XU CHEN ZHU XINHANG LI LIANGJUN LU JIANPING CHEN LINJIE ZHOU 

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks,Shanghai Key Laboratory of Navigation and Location Services,Shanghai Institute for Advanced Communication and Data Science,Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [2]SJTU-Pinghu Institute of Intelligent Optoelectronics,Pinghu 314200,China [3]State Grid Sichuan Electric Power Company Chengdu Xinjin Power Supply Branch,Xinjin 611430,China

出　　处：《Photonics Research》2024年第5期912-920,共9页光子学研究（英文版）

基　　金：National Key Research and Development Program of China(2022YFB2804502);National Natural Science Foundation of China(6207030193,62090052,62135010);Special-Key Project of Innovation Program of Shanghai Municipal Education Commission(2019-07-00-02-E00075)。

摘　　要：Based on the wavelength transparency of the Butler matrix(BM)beamforming network,we demonstrate a multibeam optical phased array(MOPA)with an emitting aperture composed of grating couplers at a 1.55μm pitch for wavelength-assisted two-dimensional beam-steering.The device is capable of simultaneous multi-beam operation in a field of view(FOV)of 60°×8°in the phased-array scanning axis and the wavelength-tuning scanning axis,respectively.The typical beam divergence is about 4°on both axes.Using multiple linearly chirped lasers,multibeam frequency-modulated continuous wave(FMCW)ranging is realized with an average ranging error of 4 cm.A C-shaped target is imaged for proof-of-concept 2D scanning and ranging.

关 键 词：OPTICAL tuning BEAM 

分 类 号：TN491[电子电信—微电子学与固体电子学]