具有温度补偿的FBG电流传感器研究

摘要

采用双光纤Bragg光栅(FBG)和2种不同的解调方法实现对基于电磁力的FBG电流传感的温度补偿,对2种解调方法进行比较.实验结果表明:采用光谱分析仪(OSA)进行波长解调,测量范围为0.35-2.5A,灵敏度为0.93 nm/A;采用滤波调谐进行光强解调,测量范围为0.30 ～0.70A,灵敏度可达到9.6 nW/mA.%Temperature compensation of fiber Bragg grating(FBG) current sensor based on electromagnetic force is realized, by adopting double FBG and two different demodulation methods, and two kinds of demodulation methods are compared. The experimental results show that wavelength is demodulated by optical spectrum analyzer (OSA),measurement range is 0. 35 ～ 2. 5 A, sensitivity is 0. 93 nm/A, and light intensity is demodulated by filtering tuning, measurement range is 0.30～0.70A,sensitivity can reach to 9.6 nW/mA.