Liquid crystal optical phased array device with a fine steering precision of a few micro-radians

被引：17

作者：

Wang, Xiangru ^{[1
]}

Tan, Qinggui ^{[2
]}

Huang, Ziqiang ^{[1
]}

Tang, Zhenhui ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Res Inst Elect Sci & Technol, Chengdu 610054, Peoples R China

[2] Sci & Technol Space Microwave Lab, Xian 710100, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2014年 / 313卷

关键词：

Diffraction gratings; Liquicl-crystal devices; Free space optical communication;

D O I：

10.1016/j.optcom.2013.10.060

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Wide range and fine steering precision are two conflicting requirements for a given scheme of liquid crystal laser deflector that is used in an acquisition tracking pointing (ATP) system for space laser communication. We report a modified liquid crystal device that has a fine steering precision and also does not affect the steering range as usual. The vernier optically phased array (V-OPA), the device we suggest, integrates a programmable phased wedge on an optical phased array. It provides the feature of a cascade system with two liquid crystal devices of a phased array and a phased wedge. Importantly, it has only one device net loss. After the theoretical analysis on this novel design, our experiments represent the relevant results showing that the device we designed has a precision of better than 2 grad. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：360 / 364

页数：5

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