基于P-OTDR分布式光纤传感中信息提取的研究  

Study of Extracting Information from Distributed Optical Fiber Sensing System Based on P-OTDR

作　　者：董贤子[1] 吴重庆[1] 付松年[2] 何娜[1] 

机构地区：[1]北京交通大学理学院,北京100044 [2]北京交通大学电子信息工程学院,北京100044

出　　处：《北方交通大学学报》2003年第6期106-110,共5页Journal of Northern Jiaotong University

基　　金：国家自然科学基金资助项目(60272010)

摘　　要：在介绍了P＿OTDR分布式传感基本原理的基础上,深入研究了从测得的背向散射信号中提取出偏振态演化信息的方法.通过数字平均和解卷积提高了信号的信噪比和系统分辨率,为P＿OTDR分布式光纤传感系统的实用化提供了一定的基础.This paper first introduced the distributed sensing principle of the polarization sensitive optical time_domain reflectometer(P_OTDR). On this basis, we investigated two methods for the extraction of the state of polarization(SOP) evolution from the tested backscattered signal in detail. The analysis results show that both the digital average and deconvolution could be used for enhancing the Signal_to_Noise ratio (SNR) and system spatial resolution. The methods can be applied to a real distributed fiber optical sensor system.

关 键 词：应用光学 光纤传感 分布式 瑞利散射 光纤双折射 偏振态 

分 类 号：O436.4[机械工程—光学工程] TH744.2[理学—光学]