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基于电光调制光频梳绝对测距的理论及实验分析

Theoretical Analysis and Application of Absolute Distance Measurements Based on Electro-Optic Modulation and Optical Frequency Comb

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摘要

为满足高精度、大尺寸、高动态的测量需求,提出一种基于光学频率梳方法的绝对测量方案。采用级联相位调制器和强度调制器的电光调制方法生成平坦的光学频率梳,可以实现频率的直接溯源,成本低且易于复现。实现了对数学模型的建立及生成质量的评估,并且将其应用于改进的多波长测距系统中。该系统实现了对传统的多波长测量系统的简化,通过解算出合成波长的相位信息实现了对绝对距离的测量以及对测量过程中噪声和不确定度的分析。

Abstract

To meet the requirements of high-precision, long-distance, and highly dynamic measurements, this article proposes a scheme for absolute distance measurement based on optical frequency combs. Cascaded phase modulators and intensity modulators are used to electro-optically generate a flat-top optical frequency comb. The system offers advantages, including direct traceability, cost efficiency, and reproducibility. Furthermore, a mathematical model is formulated and used to assess the quality of the optical frequency comb generated for use in a multi-heterodyne ranging system. The system is simpler than traditional multi-wavelength measurement systems, and realizes absolute distance measurements by extracting phase information from the synthesized wavelengths of the optical comb. The mathematical model presented herein is used to analyze the noise and uncertainty involved in the system.

Newport宣传-MKS新实验室计划
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中图分类号:O348.11;TH471;P225.2;TB921

DOI:10.3788/cjl201845.1204002

所属栏目:测量与计量

基金项目:国家自然科学基金(51675380)、微光机电系统技术教育部重点实验室开放课题自主资助基金(MOMST 2016-01)

收稿日期:2018-06-22

修改稿日期:2018-07-27

网络出版日期:2018-08-09

作者单位    点击查看

赵宇航:天津大学精密测试技术及仪器国家重点实验室, 天津 300072
曲兴华:天津大学精密测试技术及仪器国家重点实验室, 天津 300072
张福民:天津大学精密测试技术及仪器国家重点实验室, 天津 300072
赵显宇:天津大学精密测试技术及仪器国家重点实验室, 天津 300072
汤国庆:天津大学精密测试技术及仪器国家重点实验室, 天津 300072

联系人作者:张福民(zhangfumin@tju.edu.cn)

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引用该论文

Zhao Yuhang,Qu Xinghua,Zhang Fumin,Zhao Xianyu,Tang Guoqing. Theoretical Analysis and Application of Absolute Distance Measurements Based on Electro-Optic Modulation and Optical Frequency Comb[J]. Chinese Journal of Lasers, 2018, 45(12): 1204002

赵宇航,曲兴华,张福民,赵显宇,汤国庆. 基于电光调制光频梳绝对测距的理论及实验分析[J]. 中国激光, 2018, 45(12): 1204002

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