【作者】 张在宣； 刘红林； 徐海峰； 王剑锋； 戴碧智；

【Author】 ZHANG Zaixuan LIU Honglin XU Haifeng WANG Jiangfeng DAI Bizhi( China Jiliang University, Optoelectronics Technology Institute, 310018; University of Shanghai for Science and Technology 200093)

【机构】 中国计量学院光电子技术研究所；

【摘要】 研制了30公里远程光纤温度传感器。基于光纤放大的反斯托克斯背向拉曼自发散射测温原理,对系统进行了优化设计。用1547nm掺铒光纤激光器作为抽运源,采用高速瞬态波形采样技术,累加平均等信号处理技术,解决了背向反斯托克斯弱信号的检测问题。采用了智能化恒温技术,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.远程分布光纤拉曼温度传感器系统已达到的主要技术指标如下:光纤长度:31公里,测温范围:0-100℃(可扩展),温度测量不确定度:±2℃,温度分辨率:0.1℃,测量时间:432秒,空间分辨率:4m。更多还原

【Abstract】 A 30km long range distributed optical fiber Raman temperature sensor (DOFRTS) system have been studied and manufactured, based on new measuring temperature principle of optical fiber amplified anti-Stokes Raman spontaneous scattering. In the system, 1550nm 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 of system components are put into an intellectualized constant temperature box, operating in constant temperature condition. Stability and environment adaptability are improved. By appraisal, the performance of the system is listed as follows: length of single mode fiber: 31km, temperature measuring range:0-100℃ (can be expanded), temperature measuring uncertainty:±2 ℃ , temperature resolution:0. 1 ℃ , measurement time:432s, spatial resolution :4m.更多还原