基于相位解调的相位敏感光时域反射计研究  

Review of Research on Phase Sensitive Optical Time-Domain Reflectometer Based on Phase Demodulation

作　　者：司召鹏 卜泽华 毛邦宁 赵春柳 徐贲 康娟 李裔 金尚忠 Si Zhaopeng;Bu Zehua;Mao Bangning;Zhao Chunliu;Xu Ben;Kang Juan;Li Yi;Jin Shangzhong(College of Optics and Electronic Science and Technology,China Jiliang University,Hangzhou 310018,Zhejiang,China)

机构地区：[1]中国计量大学光学与电子科技学院,浙江杭州310018

出　　处：《激光与光电子学进展》2022年第11期99-112,共14页Laser & Optoelectronics Progress

基　　金：国家重点研发计划(2020YFF0217800);国家自然科学基金(61775202);广东省信息光子技术重点实验室开放课题基金(GKPT20-04)。

摘　　要：基于相位敏感的光时域反射计(ΦOTDR)通过发射光脉冲到传感光纤内,利用分析传感光纤的后向瑞利散射光或前向散射光的方法对入侵扰动事件进行识别和定位。对比其他光纤分布式传感技术,ΦOTDR能够长距离分布式多点测量,精度高、可靠性好,研究ΦOTDR具有重要的应用价值。本文介绍了ΦOTDR的基本原理、结构、系统性能、信号解调和应用情况,并对ΦOTDR技术进行了展望。Phase sensitive optical timedomain reflectometer(ΦOTDR)transmits light pulses into the sensing optical fiber,and uses the method of analyzing the back Rayleigh scattered light or forward scattered light of the sensing fiber to identify and analyze intrusion disturbance events.Compared with other distributed optical fiber sensing technology,ΦOTDR can perform longdistance distributed multipoint measurement with high accuracy and reliability.The study ofΦOTDR has important application value.In this paper,the basic principle,structure,system performance,signal demodulation,and application ofΦOTDR are introduced,and the extensionΦOTDR technology is prospected.

关 键 词：光纤光学 相位敏感光时域反射 分布式光纤传感 扰动检测 信号调制 

分 类 号：O436[机械工程—光学工程]