Table of Contents Author Guidelines Submit a Manuscript
International Journal of Optics
Volume 2016, Article ID 7175809, 6 pages
http://dx.doi.org/10.1155/2016/7175809
Research Article

Theoretical and Experimental Demonstration on Grating Lobes of Liquid Crystal Optical Phased Array

1School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China
2Science and Technology on Electro-Optical Information Security Control Laboratory, Sanhe 065201, China
3School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
4Shanghai Aerospace Electronic Technology Institute, Shanghai 201109, China

Received 3 June 2016; Accepted 26 July 2016

Academic Editor: Venkata S. R. Jampani

Copyright © 2016 Xiangru Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

High deflection efficiency is one of the urgent requirements for practical liquid crystal optical phased array (LC-OPA). In this paper, we demonstrate that high order grating lobes induced from fringe effect are the most important issue to reduce occupation of main lobe. A novel theoretical model is developed to analyze the feature of grating lobes when the device of LC-OPA is working on the scheme of variable period grating (VPG) or variable blazing grating (VBG). Subsequently, our experiments present the relevant results showing a good agreement with the theoretical analysis.