Advances in phase-sensitive optical time-domain reflectometry

作     者：Shuaiqi Liu Feihong Yu Rui Hong Weijie Xu Liyang Shao Feng Wang Shuaiqi Liu;Feihong Yu;Rui Hong;Weijie Xu;Liyang Shao;Feng Wang

作者机构：Department of Electrical and Electronic EngineeringSouthern University of Science and TechnologyShenzhen 518000China Key Laboratory of Intelligent Optical Sensing and ManipulationMinistry of EducationNanjing UniversityNanjing 210023China 

出 版 物：《Opto-Electronic Advances》 (光电进展（英文）)

年 卷 期：2022年第5卷第3期

页      面：25-52,I0001页

核心收录：

学科分类：080202[工学-机械电子工程] 08[工学] 0802[工学-机械工程] 

基　　金：supported in part by the Startup Fund from Southern University of Science and Technology and Shenzhen government under Grant No.Y01236128 by the National Natural Science Foundation of China(NSFC)under Grant Nos.61627816 and 61975076 by the Qing Lan Project of Jiangsu Province 

主　　题：optical fiber sensors Ф-OTDR phase demodulation application research 

摘      要：Phase-sensitive optical time-domain reflectometry(Φ-OTDR)has attracted numerous attention due to its superior performance in detecting the weak perturbations along the *** on the ultra-sensitivity of light phase to the tiny deformation of optical fiber,Φ-OTDR has been treated as a powerful technique with a wide range of *** is fundamental to extract the phase of scattering light wave accurately and the methods include coherent detection,I/Q demodulation,3 by 3 coupler,dual probe pulses,and so ***,researchers have also made great efforts to improve the performance ofΦ-*** frequency response range,the measurement accuracy,the sensing distance,the spatial resolution,and the accuracy of event discrimination,all have been enhanced by various ***,lots of researches on the applications in various kinds of fields have been carried out,where certain modifications and techniques have been ***,Φ-OTDR remains as a booming technique in both researches and applications.