scholarly journals High-Efficiency, Wide Working Bandwidth Antenna Based on SOI Platform for Optical Phased Array

Micromachines ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 996
Author(s):  
Zihao Wang ◽  
Jiali Liao ◽  
Yixiang Xie ◽  
Yanling Sun ◽  
Xifeng Li ◽  
...  
Keyword(s):  
Phased Array ◽  
High Efficiency ◽  
Optical Antennas ◽  
Background Suppression ◽  
Optical Antenna ◽  
Novel Structure ◽  
Surface Optical ◽  
High Emission ◽  
Fabrication Tolerances ◽  
Optical Phased Array

A novel structure of a subwavelength surface optical antenna for optical phased array is proposed in this paper. An asymmetric vertical grating structure is applied to achieve high emission efficiency (73% at 1550 nm). Optical antennas with large fabrication tolerances can also maintain a wide working bandwidth of 1 dB between 1350 and 1850 nm. The far-field scanning characteristics of 16-channel optical phased array are investigated in this study by employing the proposed antenna. The results show that the background suppression without considering side lobes caused by the antenna arrangement is −24.5 dB when the phase difference is 0 and when the scan range is as large as ±14.8° × 73.6°.

scholarly journals A Design Approach of Optical Phased Array with Low Side Lobe Level and Wide Angle Steering Range

Photonics ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 63
Author(s):  
Xinyu He ◽  
Tao Dong ◽  
Jingwen He ◽  
Yue Xu
Keyword(s):  
Phased Array ◽  
Phase Distribution ◽  
Beam Steering ◽  
Side Lobe ◽  
Design Approach ◽  
Optical Antennas ◽  
Side Lobe Level ◽  
Wide Angle ◽  
Spacing Distribution ◽  
Optical Phased Array

In this paper, a new design approach of optical phased array (OPA) with low side lobe level (SLL) and wide angle steering range is proposed. This approach consists of two steps. Firstly, a nonuniform antenna array is designed by optimizing the antenna spacing distribution with particle swarm optimization (PSO). Secondly, on the basis of the optimized antenna spacing distribution, PSO is further used to optimize the phase distribution of the optical antennas when the beam steers for realizing lower SLL. Based on the approach we mentioned, we design a nonuniform OPA which has 1024 optical antennas to achieve the steering range of ±60°. When the beam steering angle is 0°, 20°, 30°, 45° and 60°, the SLL obtained by optimizing phase distribution is −21.35, −18.79, −17.91, −18.46 and −18.51 dB, respectively. This kind of OPA with low SLL and wide angle steering range has broad application prospects in laser communication and lidar system.

scholarly journals High-efficiency end-fire 3D optical phased array based on a multi-layer Si3N4/SiO2 platform

2020 ◽  
Vol 59 (8) ◽  
pp. 2489 ◽  
Author(s):  
Dachuan Wu ◽  
Yasha Yi ◽  
Yuxiao Zhang
Keyword(s):  
Phased Array ◽  
High Efficiency ◽  
Optical Phased Array

scholarly journals Large scanning range optical phased array with a compact and simple optical antenna

2020 ◽  
Vol 224 ◽  
pp. 111237
Author(s):  
Pengfei Wang ◽  
Guangzhen Luo ◽  
Yajie Li ◽  
Wenyu Yang ◽  
Hongyan Yu ◽  
...  
Keyword(s):  
Phased Array ◽  
Optical Antenna ◽  
Optical Phased Array ◽  
Scanning Range

High Efficiency Optical Phased Array Using Silicon Nitride Waveguide

2020 ◽  
Vol 70 (9) ◽  
pp. 752-758
Author(s):  
Byeongchan PARK ◽  
Nan Ei YU* ◽  
Seong-Jin SON
Keyword(s):  
Silicon Nitride ◽  
Phased Array ◽  
High Efficiency ◽  
Optical Phased Array

Millimeter-Long Optical Antenna for Optical Phased Array

2020 ◽  
Author(s):  
Jiaxin Chen ◽  
Wanxin Li ◽  
Jiajun Tian ◽  
Yunxu Sun ◽  
Yong Yao ◽  
...  
Keyword(s):  
Phased Array ◽  
Optical Antenna ◽  
Optical Phased Array

High-efficiency liquid-crystal optical phased-array beam steering

1996 ◽  
Vol 21 (9) ◽  
pp. 689 ◽  
Author(s):  
D. P. Resler ◽  
D. S. Hobbs ◽  
R. C. Sharp ◽  
L. J. Friedman ◽  
T. A. Dorschner
Keyword(s):  
Liquid Crystal ◽  
Phased Array ◽  
High Efficiency ◽  
Beam Steering ◽  
Optical Phased Array

An Optimized Scheme for Optical Phased Array Beam Steering Controlled by Wavelength

PIERS Online ◽  
2007 ◽  
Vol 3 (2) ◽  
pp. 127-131 ◽  
Author(s):  
Ying Zhao ◽  
Xiaozhou Yang ◽  
Qin Cai ◽  
Weiwei Hu
Keyword(s):  
Phased Array ◽  
Beam Steering ◽  
Optical Phased Array
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