Optical phased array antenna with wide steering range using grating array superlattices

被引：3
|
作者：
Wu, Zijin [1 ]
Jiang, Wei [1 ]
Xia, Jinsong [1 ]
Huang, Qingzhong [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China
来源：
SIXTH INTERNATIONAL CONFERENCE ON OPTICAL AND PHOTONIC ENGINEERING (ICOPEN 2018) | 2018年 / 10827卷
基金：
中国国家自然科学基金;
关键词：
Integrated optics devices; LIDAR; optical phased array; beam steering; sub-wavelength structures;
D O I：
10.1117/12.2500591
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present a optical phased array antenna with gratings by using shallow ethced grating coupler on silicon-on-insulator for large angle optical beam steering. By decreasing the spacing of antenna to 0.9 mu m, The steering range of the antenna can reach as large as 106 degrees with a SNR of -7dB. To prevent crosstalk from grating coupler with small element spacing, we change the width of each grating to cause phase mismatch between adjacent antennas. Specific design is also made to the periods of each antenna in order to make the steering angle of antenna the same. Such grating array superlattices have great potential in LIDAR and free-space communication for its large steering range and small SNR.
引用
收藏
页数：6
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