摘要
提出了一种基于InGaAs/InP单光子探测器的布里渊分布式传感测量方法,通过分析布里渊信号功率和频移的变化,可以对光纤的温度和应变特性同时进行准确识别和定位。此外,通过调整单光子探测器的探测周期,该测量方法可以满足近、中、远程光纤长度测量的需求。最终,实现了25km光纤的布里渊光谱的测量,并清晰识别了在应力作用下的0.05%光纤形变。该方法提升布里渊分布式传感的灵敏度和测量范围,进一步拓宽了其在航空工业,地质工程等领域中的应用。
A brillouin distributed sensing measurement method was demonstrated based on InGaAs/InP single photon detector（SPD）.The temperature and strain characteristics of optical fiber could be achieved by analyzing the Brillouin power and spectral shift distribution.Besides,this method could measure different range optical fiber by adjusting the detection cycle of the SPD.At last,Brillouin spectrum of 25 km fiber was measured successfully and the 0.05% change of the fiber caused by strain was identified clearly.This method improved the sensitivity and the range of the Brillouin distributed sensing,further broadening its applications in the aviation industry,geological engineering and other fields.
出处
《电子测量技术》
2017年第7期179-183,共5页
Electronic Measurement Technology
基金
国家自然科学基金(11404212
11604209)资助项目
关键词
布里渊散射
分布式传感
单光子探测
Brillouin scattering
distributed sensing
single photon detector
