1.66μm和1.55μm光源对长距离光纤拉曼温度传感器测量时间影响的理论对比  

Numerical Comparison on the Measurement Time of Long Range Fiber Raman Distributed Temperature Sensors Operating at 1.66 μm and 1.55 μm

作　　者：张磊[1] 冯雪[1] 张巍[1] 刘小明[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《光子学报》2009年第11期2805-2809,共5页Acta Photonica Sinica

摘　　要：通过理论分析,在综合考虑长距离光纤拉曼温度传感器中各光学器件波长相关特性的基础上,比较了1.66μm和1.55μm光源对传感器测量时间的影响.计算结果表明,由于各光学器件在1.5μm波段的高性能和最大允许入纤脉冲峰值功率的增加,采用1.66μm光源的光纤拉曼温度传感器,最高可获得约1.94倍的背向反斯托克斯信号.在相同空间分辨率和温度分辨率的情况下,测量时间可以降低约3/4.The measurement time of fiber Raman distributed temperature sensors （FRDTSs） using 1.66 μm and 1.55 μm light sources is compared numerically.According to the calculation results,the intensity of the received anti-stokes backscattered signal can be increased about 1.94 folds in the FRDTSs based on 1.66 μm light sources because of the advanced performances of optical devices at 1.5 μm band and the increase of the maximum launched light power.The measurement time can be saved by three quarters with the same spatial resolution and temperature resolution.

关 键 词：分布式温度传感器 光时域反射 光源 拉曼散射 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TN25[自动化与计算机技术—控制科学与工程]