Improving the Performance of the Optical Antenna for Integrated LIDAR with Optical Phased Arrays through High Contrast Grating Structure on SOI Substrate. (20th July 2018)

• Record Type: Journal Article
• Authors: Wang, Pengfei; Li, Zhaosong; Yu, Hongyan; Li, Yajie; Tang, Qiang; Zhao, Wu; Zhou, Xuliang; Chen, Weixi; Zhang, Yejin; Pan, Jiaoqing
• Is Part Of: ECS transactions. Volume 86:Number 7(2018)
• Page Start: 123
• Page End: 130
• Publication Date: 2018-07-20
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/08607.0123ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : A novel optical antenna for integrated LIDAR with optical phased arrays is proposed and simulated. A HCG structure is used to achieve extremely efficient emission. The emission efficiency is as high as 93.94% at 1550 nm, which exceeds 50% in a range of wavelength from 1480 nm to 1620 nm. The antenna can achieve a perfect grating lobe suppression with background suppression of 28.4dB when the phase difference between adjacent waveguides is 0. A 16-wire optical phased arrays LIDAR can easily achieve a scan range of ±22.8°×20.2° with a beam width of 2.4°×2.5°, by employing the optical antenna proposed.