Non-uniform optical phased array with a large steering angle and high side mode suppression ratio

被引：7
|
作者：
Wang, Z. H. E. N. G. [1 ,2 ]
Ma, P. E. N. G. F. E., I [1 ,2 ]
Yang, Y. I. B. O. [1 ,2 ]
Cui, L. A. N. G. L. I. N. [1 ,2 ]
Yu, L. E., I [1 ,2 ]
Luo, G. U. A. N. G. Z. H. E. N. [1 ,2 ]
Wang, P. E. N. G. F. E., I [1 ,2 ]
Pan, J. I. A. O. Q. I. N. G. [1 ,2 ]
Su, Y. A. N. M. E., I [1 ,2 ]
Zhang, Y. E. J. I. N. [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing, Peoples R China
来源：
APPLIED OPTICS | 2022年 / 61卷 / 36期
基金：
中国国家自然科学基金;
关键词：
Genetic algorithms;
D O I：
10.1364/AO.477363
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An optical phased array (OPA) is one of the most promising methods of light detection and ranging. Anon-uniform array with different emitter distances is a method to realize OPA steering without grating lobes or a distance between two adjacent emitters larger than lambda/2. However, the side mode suppression ratio (SMSR) will decrease as OPA turns into a large angle. In this paper, 64-, 128-, and 256-channel non-uniform OPAs are optimized by non-dominated sorting genetic algorithm-II (NSGA-II), which is a multi-objective optimization algorithm. Compared with arrays optimized by a genetic algorithm, the SMSR at 80 degrees improves by 2.18, 2.61, and 2.56 dB, respectively.(c) 2022 Optica Publishing Group
引用
收藏
页码：10788 / 10793
页数：6
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