【摘要】 仿真分析了光纤布拉格光栅(FBG)横向局部受力时的光谱变化,对不同受力位置、受力大小、受力长度分别作了谱分析.当FBG横向受力时,光谱会分裂,右侧反射峰将向长波漂移.当FBG只横向局部受力时,在反射光谱上出现一个透射缺口,且随压力的变化而呈线性、周期性变化.并对不同情况作了传感特性分析,希望这能对以后的实验研究具有一定的参考作用.更多还原

【Abstract】 Fiber Bragg grating(FBG) under transverse force to grating section was studied by numerical simulation.It was discussed by reflection spectrum to different cases.The reflection spectrum of the FBG subjected to the transverse force split into two main peaks,and the right split peak moved towards longwave.The reflection spectrum of the FBG subjected to the transverse force to a small grating section is split,and the split point shifted linearity and periodically versus the applied force.Subsequently we present an analysis of the sensing property,this will have reference significance to later experiment.更多还原