Optical phased array using high-contrast grating all-pass filters for fast beam steering

2013 ◽  
Author(s):  
Weijian Yang ◽  
Tianbo Sun ◽  
Yi Rao ◽  
Trevor Chan ◽  
Mischa Megens ◽  
...  
Keyword(s):  
Phased Array ◽  
Beam Steering ◽  
High Contrast ◽  
High Contrast Grating ◽  
Optical Phased Array

scholarly journals High speed optical phased array using high contrast grating all-pass filters

2014 ◽  
Vol 22 (17) ◽  
pp. 20038 ◽  
Author(s):  
Weijian Yang ◽  
Tianbo Sun ◽  
Yi Rao ◽  
Mischa Megens ◽  
Trevor Chan ◽  
...  
Keyword(s):  
High Speed ◽  
Phased Array ◽  
High Contrast ◽  
High Contrast Grating ◽  
Optical Phased Array

High-contrast grating hollow-core waveguide splitter applied to optical phased array

2014 ◽  
Author(s):  
Che Zhao ◽  
Ping Xue ◽  
Hanxing Zhang ◽  
Te Chen ◽  
Chao Peng ◽  
...  
Keyword(s):  
Phased Array ◽  
High Contrast ◽  
Hollow Core ◽  
High Contrast Grating ◽  
Optical Phased Array

Fast optical phased array with ultra-lightweight high-contrast-grating mirrors

2012 ◽  
Author(s):  
Byung-Wook Yoo ◽  
Trevor Chan ◽  
Mischa Megens ◽  
Tianbo Sun ◽  
Weijian Yang ◽  
...  
Keyword(s):  
Phased Array ◽  
High Contrast ◽  
High Contrast Grating ◽  
Optical Phased Array

scholarly journals A 32 × 32 optical phased array using polysilicon sub-wavelength high-contrast-grating mirrors

2014 ◽  
Vol 22 (16) ◽  
pp. 19029 ◽  
Author(s):  
Byung-Wook Yoo ◽  
Mischa Megens ◽  
Tianbo Sun ◽  
Weijian Yang ◽  
Connie J. Chang-Hasnain ◽  
...  
Keyword(s):  
Phased Array ◽  
High Contrast ◽  
High Contrast Grating ◽  
Optical Phased Array ◽  
Sub Wavelength

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

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.

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