Open AccessImproving the performance of optical antenna for optical phased arrays through high-contrast grating structure on SOI substrate
Author(s) -
P. F. Wang,
Gan Luo,
Hui Yu,
Y. J. Li,
M. Q. Wang,
Xuliang Zhou,
W. X. Chen,
Y. J. Zhang,
Jiaoqing Pan
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.002703
Subject(s) - optics , grating , phased array , materials science , phased array optics , antenna (radio) , optoelectronics , physics , telecommunications , computer science
A novel optical antenna for optical phased arrays is proposed and simulated. A high-contrast grating structure is used to achieve extremely efficient emission. The emission efficiency is as high as 93.94% at 1.55 μm, which exceeds 50% in a range of wavelength from 1.48 μm to 1.62 μm. The antenna can achieve a perfect grating lobe suppression with background suppression of 28.4 dB when the phase difference between adjacent waveguides is 0. A 16-wire optical phased array 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.