Developing High-Frequency Fiber Bragg Grating Acceleration Sensors to Monitor Transmission Line Galloping

The traditional fiber Bragg grating (FBG) acceleration has a low operating frequency, which limits its application in transmission line galloping monitoring. We develop a slotting optimization technique to realize the accurate tracking of transmission line galloping in this work. Furthermore, this technique is applied to the development of a high-frequency FBG acceleration sensor. The width, position, and length of the slot are optimized to minimize the slot's effect on the FBG acceleration sensor. The vibration experiment in our work studies the frequency response and the sensing property of this FBG acceleration sensor. The experimental results indicate that our high-frequency FBG acceleration sensor has not only high sensitivity but also accurate monitoring results.