A Novel Dynamic Transverse Load Sensor Based on A LPFG
基于新型长周期光纤光栅的动态横向负荷传感器

A novel dynamic transverse load sensor based on the LPFGs induced by high frequency CO 2 laser pulses is demonstrated, for the first time, to our knowledge. The peak amplitude of the LPFG has a good linear relationship with the transverse load. A new measurement system consisting of a narrowband light source and a photodetector is proposed to measure the dynamic transverse load directly. As the measurement is realized by detecting the peak amplitude change of the LPFG directly, this sensor system is simple and fast. The experimental results show that such a system could be a practical approach to realize dynamic transverse load measurement for large engineering structures, such as bridges, highways, etc.