摘要
提出了一种电压温度双参量光纤传感器.在理论上分析了从一个敏感晶体上分离出温度、电压两种信息的可能性:石英晶体作为敏感元件.通过合理安排传感头中各部件.传感器同时输出两路信号:一路是包含Pockels效应的电压信号;一路是石英晶体旋光效应的信号.由于旋光效应与温度有关.这路信号用来反映传感头光路上的温度信息.实验获得理论所预期的结果.从而只使用一个传感头就可以同时测量电压与温度.给出了实验装置.结果显示在90℃温度范围内电压的精度可达0.5%.温度的精度为±1℃.
A novel fiber- optic sensor for the simultaneous measurement of voltage and temperature is presented. The possibility of the separation of the voltage and temperature from a sensing head is analyzed theoritically as follows: a quartz acts as a sensing element, the 1/4 wave plate is put behind the quartz, and the sensing head can simultaneously output two signals. One singnal, involving the Pockels effect, is for voltage measurement; and the another, associated with the optical rotation effect, is for the temperature measurement. The experimental results show that the voltage accuracy of 0. 5% can be obtained when the temperature varies by 90℃, and the accuracy of the temperature measurement is ± 1℃.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1997年第11期997-1002,共6页
Chinese Journal of Lasers
