The reflection spectrum of the FBG subjected to the transverse and local force will split into two main peaks,and the split point will shift linearly and periodically with the applied force.

 
  • 当FBG横向局部受力时,光谱会分裂,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。
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