Research of Temperature Compensation of Optical Fiber Current Sensor Based on Matlab

To solve the problem of temperature stability existed in optical fiber current sensor,the paper proposed a design scheme of temperature compensation of optical fiber current sensor based on Matlab.According to deviation value of output of the optical fiber current sensor,the scheme makes quartic polynomial fitting based on the least square method combining with the function of curve fitting of Matlab,so as to find temperature compensation factor and build temperature compensation equation.The experiment result showed that the maximal error of current value measured by the optical fiber current sensor is reduced from 13.35% before temperature compensation to 0.3% after temperature compensation,which improves accuracy and temperature stability of the optical fiber current sensor greatly.