Author(s): Ma, PF (Ma, Pengfei); Luo, GZ (Luo, Guangzhen); Wang, PF (Wang, Pengfei); Ma, JB (Ma, Jianbin); Wang, RT (Wang, Ruiting); Yang, ZX (Yang, Zhengxia); Zhou, XL (Zhou, Xuliang); Zhang, YJ (Zhang, Yejin); Pan, JQ (Pan, Jiaoqing)

Source: OPTICS COMMUNICATIONS Volume: 501 Article Number: 127361 DOI: 10.1016/j.optcom.2021.127361 Published: DEC 15 2021

Abstract: A novel unidirectional SiN antenna for LiDAR is proposed. It is designed as a sandwich structure composed of two layers of gratings and a slab waveguide. The highest upward directionality is 96.7% at 957 nm and upward directionality exceeds 53% in the wavelength range of 875 nm to 1100 nm. With an antenna aperture size of 15.5 mm x 2.048 mm, a small divergence angle of 0.0037 degrees x 0.027 degrees (Delta theta x Delta phi) is achieved. It is able to get higher output than silicon-based optical phased arrays to increase the detection range of integrated optical phased array LiDAR chips.

Accession Number: WOS:000696943300012

ISSN: 0030-4018

eISSN: 1873-0310

Full Text: https://www.sciencedirect.com/science/article/pii/S0030401821006106?via%3Dihub