摘要
在分布型光纤拉曼光子温度传感器(DOFRPTS)系统中,自发拉曼光子是温度信息的载体,在2km光纤上实时采样1000个点,用于空间温度场分布的测量。系统采用拉曼光时域反射技术,对所测点进行定位。对分布光纤拉曼光子温度传感器系统的测温精度进行了讨论,由系统的信噪比来确定测温精度,提出了改善测温精度的方法,实际系统的测温精度达±1℃。
In the distributed optical fiber Raman photons temperature senser (DOFRPTS) system, spontaneous Raman photons are carriers of temperature signal. On the 2 km optical fiber, 1000 points have been sampled on time used for the measurement of temperature field in space. The position of measurement point was determined by Raman scattering optical time domain reflection (OTDR) technique. Signal and noise of the system have been discussed, the measured temperature accuracy of the DOFRPS system is ±1℃ determined by S/N ratio.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1999年第1期100-105,共6页
Acta Optica Sinica
基金
国家首批产学研工程项目
关键词
拉曼光子
光纤传感器
测温精度
温度传感
Raman photon, distributed optical fiber sensor, OTDR technique, measurement accuracy of temperature.