摘要
提出了一种双参量偏振调制光纤传感器结构。在理论上分析了从一个敏感晶体上分离出两种信息的可能性 :通过合理安排传感头中各部件 ,使得传感器同时输出反映两种信息的两路信号。在实验上获得了理论所预期的结果 :只使用一个传感头就可以同时测量电压与温度、力与温度。实验室条件下 ,温度传感的精度为± 1℃。在工作温度 2 0～ 110℃范围内 ,电压传感的温度稳定性在 0～ 10kV量程内为± 0 .5 % ;而力传感的温度稳定性在 0～80N量程内可达± 0 .1%。
A polarization modulated fiber optic sensor with a single sensing head for the simultaneous measurement of two parameters is presented. The possibility of the separation of two parameters from a sensing head is analyzed theoretically. Through optical components arranged properly, the sensing head can simultaneously output two signals which can represents two different physics parameters. The experimental results verify predictions and show that voltage and temperature, or force and temperature can be simultaneously measured by using only one of this kind of sensing head. Under lab condition, when the temperature changes from 20 ℃ to \{110 ℃,\} the force output with the temperature stability of ±0.1% within the range of 0～80 N and the voltage output with temperature staility of ±0.5% within the range of 0～10 kV can be obtained, while the accuracy of the temperature detection is ±1 ℃.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2001年第1期93-96,共4页
Acta Optica Sinica
