喇曼型分布式光纤温度传感器温度分辨率的理论分析

Theoretic Analysis for the Temperature Resolution of Distributed Optical fiber Temperature Sensor Based on Raman Scattering

本文对喇曼型分布式光纤温度传感器的温度分辨率提出一个理论分析方法，得出理论计算式，并具体分析了单模光纤传感系统和实际分布式光纤温度传感器。

In this paper,through studying the temperature resolution of distributed optical fiber temperature sensor based on raman backscattering,we put forward a new theoretic analysis and get a calculation formula of the temperature resolution,which is derectly determined by the S/N ratio of the received backscattering anti Stokes light power.Using it,we analysized ideal single mode fiber system and put up with some methods for improving the temperature resolution.At last,we analysized our actual distributed optical fiber sensor,and the result is valueable to the actual sensor designing.