30km远程分布光纤拉曼温度传感器系统的实验研究  

Experimental Research of 30 km Long Distance Distributed Optical Fiber Raman Temperature Sensor System

作　　者：张在宣[1] 王剑锋[1] 刘红林[1] 余向东[1] 郭宁[1] Insoo S.KIM 

机构地区：[1]中国计量学院光电子技术研究所,浙江杭州310034 [2]韩国电气技术研究院

出　　处：《中国激光》2004年第5期613-616,共4页Chinese Journal of Lasers

基　　金：浙江省重点科研 ( 0 1110 1981);韩国科学技术部韩中光技术研究中心基金资助项目

摘　　要：研制成功一套 30km远程分布光纤拉曼温度传感器 (DOFRTS)系统 ,采用了新的光纤放大的反斯托克斯背向拉曼自发散射测温原理和 15 5 0nm掺铒光纤激光器作为抽运源及高速瞬态波形采样技术 ,累加平均等信号处理技术 ,提高了信噪比 ,解决了弱信号检测问题。使用智能化恒温技术 ,使主要元器件在恒温条件下工作 ,解决了工程应用中环境的适应性问题。经鉴定 ,远程分布光纤拉曼温度传感器系统的主要技术指标如下 :光纤长度为 31km ,测温范围为 0～ 10 0℃ (可扩展 ) ,温度测量不确定度为± 2℃ ,温度分辨率为 0 1℃ ,测量时间为 4 32s,空间分辨率为 4m。A 30 km long range distributed optical fiber Raman temperature sensor (DOFRTS) system has been made, it use new measuring temperature principle of optical fiber amplified anti Stokes Raman spontaneous scattering. In the system, 1550 nm erbium doped optical fiber laser, high speed data acquisition card and signal processing technique are used. By using these technique, the problem of weak signal detection is resolved and signal to noise ratio is increased. All components of system are put into an intellectualized constant temperature box and work in constant temperature condition. Stability and environment adaptability are improved. By appraisal, performance of the system is listed as follows: optical single mode fiber: 31 km, temperature rang: 0～100℃ (can be expanded), temperature measuring uncertainty: ±2℃, temperature resolution: 0.1℃, measurement time: 432 s, spatial resolution: 4 m. The contrast table of the performance of DOFRTS system is given in the paper.

关 键 词：传感器技术 光纤传感器 背向拉曼散射 光纤放大反斯托克斯拉曼自发散射 光时域反射技术 

分 类 号：TN247[电子电信—物理电子学] O551.2[理学—热学与物质分子运动论]