传感技术学报2017，Vol.30Issue(7)：1017-1021,5.DOI:10.3969/j.issn.1004-1699.2017.07.008
基于相干检测的偏振光时域反射光纤振动传感系统
Polarization Optical Time Domain Reflectometry Vibration Sensing System Based on Coherent Detection Method
摘要
Abstract
The coherent detection method with higher detection sensitivity is introduced into the polarization optical time domain reflectometry(POTDR)with the polarization state sensitive to external disturbance.The developed sensing system can realize the fiber distributed sensing,acquiring the vibration signal and positioning the disturbance spot along fiber.First,the related theory of coherent detection and POTDR is given and the technical feasibility is examined.Then,according to the proposed scheme,the measurement system has been built.Experimental results show that the POTDR based on coherent detection method do sense the external vibration and the position of vibration along fiber,which is important to the further development of distributed fiber sensor.关键词
相干检测技术/偏振光时域反射技术/光纤分布式传感/定位功能Key words
coherent detection/polarization optical time domain reflectometry/fiber distributed sensing/positioning分类
信息技术与安全科学引用本文复制引用
何剑,王二伟..基于相干检测的偏振光时域反射光纤振动传感系统[J].传感技术学报,2017,30(7):1017-1021,5.基金项目
国家自然科学基金项目(51605449) （51605449）
山西省应用基础研究青年科技研究基金项目(2016021064) （2016021064）
中北大学科学研究基金项目(XJJ2016027) （XJJ2016027）
