中国激光, 2016, 43 (7): 0700002, 网络出版: 2016-07-13
基于瑞利散射的超长距离分布式光纤传感技术 下载: 833次
Ultra-Long Fully Distributed Optical Fiber Sensor Based on Rayleigh Scattering Effect
光纤光学 连续分布式光纤传感 瑞利散射 相干探测 光时域反射计 fiber optics fully distributed optical fiber sensor Rayleigh scattering coherent detection optical time domain reflectometry
摘要
基于瑞利散射效应的相干探测光时域反射技术(COTDR)因具有高动态范围、高灵敏度等特性,而成为超长距离连续分布式传感监测的重要手段。在介绍COTDR技术的原理和发展现状基础上,对COTDR传感系统的设计及关键技术包括抑制相干衰落噪声、提高传感速度以及多机理融合传感系统等进行了研究,并对COTDR在超长通信线缆链路监测、温度和应变传感等方面的应用进行了探讨。
Abstract
The coherent optical time domain reflectometry (COTDR) based on Rayleigh scattering is an important technique for the monitoring of ultra-long fiber link, for its high dynamic range and sensitivity. The principle and development of COTDR is introduced. The design method and key techniques such as the coherent fading noise suppression, measurement speed enhancement and multi-functions fusion system structure are discussed. And several important applications of COTDR are given, including ultra-long communication optical fiber link monitoring and distributed temperature/strain sensing.
张旭苹, 张益昕, 王峰, 吕立冬, 王祥传. 基于瑞利散射的超长距离分布式光纤传感技术[J]. 中国激光, 2016, 43(7): 0700002. Zhang Xuping, Zhang Yixin, Wang Feng, Lü Lidong, Wang Xiangchuan. Ultra-Long Fully Distributed Optical Fiber Sensor Based on Rayleigh Scattering Effect[J]. Chinese Journal of Lasers, 2016, 43(7): 0700002.