基于光梳的实时高分辨相位测量方法理论分析  

Theoretical Analysis of Real-Time High-Resolution Phase Measurement Method Based on Optical Combs

作　　者：葛锦蔓 闫明[2,3] 谭庆贵 禹旭敏[1] 朱忠博[1] 李小军[1] 曾和平[2,3] Jinman Ge;Ming Yan;Qinggui Tan;Xumin Yu;Zhongbo Zhu;Xiaojun Li;Heping Zeng(National Key Laboratory of Science and Technology on Space Microwave,China Academy of Space Technology(Xi'an),Xi'an,Shanxi 710100,China;State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200241,China;Chongqing Institute of East China Normal University,Chongqing 401147,China)

机构地区：[1]中国空间技术研究院西安分院空间微波技术国家级重点实验室,陕西西安710100 [2]华东师范大学精密光谱国家重点实验室,上海200241 [3]华东师范大学重庆研究院,重庆401147

出　　处：《中国激光》2020年第11期139-146,共8页Chinese Journal of Lasers

基　　金：国家自然科学基金(11904283);国家实验室基金(6142411196316,2020SSFNKLSMT-13)

摘　　要：针对液晶光学相控阵(LCOPA)调制相位分布测量实时可溯源的问题,结合空间啁啾技术与双光梳干涉测量技术,提出一种基于光梳的空间高分辨相位测量方法。针对光栅以及光梳光源的参数对系统空间分辨率以及测量视场的影响进行理论仿真分析。理论仿真结果表明,该方法的测量视场可达100 mm,空间分辨率优于2μm。实验结果表明,该方法能够在微秒时间尺度内实现LCOPA多通道驱动电极调制相位分布的快速测量,因此有望为LCOPA器件的研制和性能的评价提供有效途径。To enable the real-time traceability of measurements of the modulated phase distribution produced by a liquid crystal optical phased array(LCOPA),a spatial high-resolution phase measurement method based on optical combs,which combines spatial chirp and dual-comb interferometry techniques,is proposed herein.Theoretical simulation analysis is conducted to study the influence of the parameters of the grating and optical comb light source on the system''s spatial resolution and measurement field of view.Theoretical simulation results show that the field of view measured using this method can reach more than 100 mm,and the spatial resolution is better than 2μm.Further,experimental results show that this method can enable the rapid measurement(microsecond timescale)of the modulation phase distribution generated by a multichannel LCOPA driving electrode.Thus,the proposed method is expected to provide an effective way for the development and performance evaluation of LCOPA devices.

关 键 词：测量 相位测量 相位调制 光学通信 干涉法 

分 类 号：O436[机械工程—光学工程] TN247[理学—光学]