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Non-uniform distributed silicon optical phased array for high directionality and a wide steering range

被引：3
|
作者：
Du, Yige [1 ]
Qiu, Yang [1 ,2 ]
Zheng, Shaonan [1 ]
Zhao, Xingyan [1 ]
Dong, Yuan [1 ]
Zhong, Qize [1 ,2 ]
Hu, Ting [1 ,2 ]
机构：
[1] Shanghai Univ, Sch Microelect, Shanghai 201800, Peoples R China
[2] Shanghai Univ, Shanghai Key Lab Chips & Syst Intelligent Connecte, Shanghai 201800, Peoples R China
来源：
APPLIED OPTICS | 2024年 / 63卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Beam-steering - Divergence angle - Dual-layers - Non-uniform - Optical phased arrays - Proof of concept - Side mode suppression ratios - Silicon strip - Strip waveguides - Two-dimensional;
D O I：
10.1364/AO.513812
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Anon -uniform distributed silicon optical phased array (OPA) is proposed and numerically demonstrated to realize high directionality and a wide range for beam steering. The OPA is composed of grating antennas with dual -layer corrugations along silicon strip waveguides, which can achieve a high directionality of 0.96 and a small divergence angle of 0.084 degrees. To reduce the crosstalk between adjacent antennas and realize a wide steering range, the genetic algorithm is improved and utilized to arrange the locations of grating antennas. As a proof of concept, a 32 -channel non -uniform distributed OPA is designed and thoroughly optimized. The simulation results successfully demonstrate a two-dimensional wide steering range of 70 degrees x 18.7 degrees with a side -mode suppression ratio (SMSR) over 10 dB. (c) 2024 Optica Publishing Group
引用
收藏
页码：1522 / 1528
页数：7
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