基于可调谐光纤Fabry-Perot(TF F-P)滤波扫描传感光纤布拉格光栅(FBG)的反射峰的原理,针对多次实验结果,设计了构成光纤光栅信号解调稳定性所需的关键电路系统。实验结果表明,硬件优化后的解调系统与光谱仪和万用表测量的数据相比较达到了预期的目标。经过标定后的系统分辨率可达1pm,动态测量范围可达50nm。
Based on the principle of tunable fiber Fabry-Perot(TF F-P) filter which scans the reflected peak of fiber Bragg grating(FBG),is designed to constitute a stable FBG signal demodulation system. Experimental results show that hardware- optimized demodulation system and the data measured by multimeter can reach the expected target. The system resolution after demarcating can reach a 1 pm,dynamic state's measuring scope can reach 50 nm.