基于相位光时域反射的光纤分布式声波传感研究（英文）  

Optical distributed acoustic sensing based on the phase optical time-domain reflectometry

作　　者：尚盈[1] 王晨[1] 刘小会[1] 王昌[1] 赵文安[1] 彭刚定[1,2] Shang Ying Wang Chen Liu Xiaohui Wang Chang Zhao Wen＇an Peng Gangding(Shandong Key Laboratory of Optical Fiber Sensing Technologies, Laser Institute of Shandong Academy of Sciences, Jinan 250014, China School of Electrical Engineering ＆ Telecommunications, University of New South Wales, NSW 2052, Australia)

机构地区：[1]山东省科学院激光研究所山东省光纤传感重点实验室,山东济南250014 [2]新南威尔士大学电气工程与电信学院

出　　处：《红外与激光工程》2017年第3期173-177,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金(61605101);山东省重点研发计划项目(2015GSF120001);山东省重点研发计划项目(2014GGX103019)

摘　　要：文中提出了一种光纤分布式声波传感方案。作用在传感光纤上的声波信号导致后向瑞利散射光的相位变化,将含有声波信息的后向瑞利散射信号注入到迈克尔逊干涉仪,并采用相位载波解调算法解调出相位信息。实验中采用压电拉伸器模拟声波振动,分布式声波传感系统实现了10 m的空间分辨率以及平坦的频响。A distributed acoustic sensing （DAS） scheme was presented. Rayleigh backscattered light which contained acoustic signal induced phase changes along the sensing fiber was fed into a Michelson interferometer, the phase changes were demodulated by the Phase Generated Cartier technology. A piezoelectric simulation experiment of acoustic vibration was designed. The DAS system realized 10 m location resolution of the acoustic source, and the flat frequency response through the experiment.

关 键 词：分布式声波传感 相位载波 干涉仪 频响 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]