Study on Optimization of Output Element of Matched Grating Interrogation System
动态匹配光栅解调方法波长读出优化研究

A cheap micro-load cell as the output element of matched grating interrogation system was proposed,different from PZT as the output element of the custom dynmatic matched grating interrogation system.The principle is based on a matching FBG as a notch filter tracking the sensing FBG and the shift wavelength of the fiber Bragg grating is proportional to the Force applied along the fiber axis.A micro-load cell is employed to locate the peak wavelength of the FBG returned signal.This scheme potentially offers a low-cost,compact,and high-performance solution for the interrogation of FBG sensors.