Improving the performance of optical antenna for optical phased arrays through high-contrast grating structure on SOI substrate | Zendy

P. F. Wang | Zendy; Guangzhen Luo | Zendy; Hui Yu | Zendy; Y. J. Li | Zendy; M. Q. Wang | Zendy; Xuliang Zhou | Zendy; Weiqiang Chen | Zendy; Yejin Zhang | Zendy; Jiaoqing Pan | Zendy

Open Access

Improving the performance of optical antenna for optical phased arrays through high-contrast grating structure on SOI substrate

Author(s) -

P. F. Wang,

Guangzhen Luo,

Hui Yu,

Y. J. Li,

M. Q. Wang,

Xuliang Zhou,

Weiqiang Chen,

Yejin 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 , antenna (radio) , phased array optics , 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.

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