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激光拉曼型分布光纤温度传感器系统是一种用于实时测量空间温度场分布的光纤传感系统，在系统中光纤既是传输媒体也是传感媒体。本文讨论了系统的工作原理、设计思想、系统的结构，在系统中采用了光纤的光时域反射（ＯＴＤＲ）技术，背向光纤激光自发拉曼光谱技术，双波长、双通道光电检测和自校正技术，高速瞬态采样平均技术。在１ｋｍ传感光纤上采样２００点并能对测温点定位；在０～１２０℃范围内测温不确定度上±２℃；测温分辨率０．１℃。
Laser Raman distribution optical fiber temperature sensor system is a real-time measurement of spatial temperature field distribution of optical fiber sensing system, the optical fiber in the system is both transmission and sensing media. This paper discusses the working principle of the system, the design idea and the structure of the system. Optical time domain reflectometry (OTDR) using optical fiber in the system, self-scanning Raman spectroscopy with back-facing fiber laser, dual wavelength, Calibration technology, high-speed transient sampling averaging technique. Sampling 200 points on a 1km sensing fiber and positioning the temperature measuring point; ± 2 ° C in the temperature uncertainty range of 0-120 ° C; temperature resolution of 0.1 ° C.