Ranging system based on optical carrier-based microwave interferometry

被引：8

作者：

Ding, Aiqi ^{[1
]}

Wu, Bin ^{[1
]}

Hou, Yibing ^{[1
]}

Yue, Jiantao ^{[1
]}

机构：

[1] Tianjin Univ, State Key Lab Precis Measuring Technol & Instrume, Tianjin 300072, Peoples R China

来源：

APPLIED OPTICS | 2021年 / 60卷 / 29期

关键词：

FIBER MICHELSON INTERFEROMETER; FABRY-PEROT-INTERFEROMETER; REFRACTIVE-INDEX; TEMPERATURE; ALGORITHM; AMPLITUDE; SENSOR;

D O I：

10.1364/AO.438767

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

To compensate for the refractive index errors in optical carrier-based microwave interferometry (OCMI), a ranging system is designed to measure the single-arm optical path of OCMI. A high-speed photodetector and a downconversion method are used to acquire the microwave envelope of the interference signal. A Hilbert transformation is used to realize phase detection. Simulation shows the linear relationship between the phase and optical length in a period. Adjusting the microwave frequency can resolve the phase ambiguity. The experimental results show that when the maximum microwave modulation frequency is set to 1.5 GHz, the standard deviation of the measured data can be limited to the level of 10(-5). (C) 2021 Optical Society of America

引用

页码：9095 / 9100

页数：6

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