Experimental Study for Improving the Measurement Accuracy of Optical Fiber Sensor

Abstract

This paper puts forward a double light path deep feedback integrated control compensation plan which is based on the current situation of the reflective intensity modulated fiber optic sensor compensation method. This scheme combines the deep feedback automation control technique with dual light path receiving and common-mode inhibition technique. The probe is designed to coaxial three-layer fiber structure. By experimental verification, this scheme effectively improves light intensity modulation fiber-optic sensor's measuring precision and stability and the error after compensation is less than 0.5%. The effect is Significant.