Fig. 1. The sensing structure model

Fig. 2. Simulation analysis results of sensing structure

Fig. 3. The influence of different structural parameters on strain and natural frequency

Fig. 4. The edge demodulation method of FBG

Fig. 5. Experimental setup

Fig. 6. Amplitude-frequency response at different wavelengths

Fig. 7. Response experiment of the sensor

Fig. 8. The sensitivity of the sensor at different vibration frequencies

Fig. 9. The cross-interference characteristics of the sensor