For realization of static performance test and test analysis of optical fiber Bragg grating（FBG） strain sensor

design a range of 700 × 10-6fiber Bragg strain sensor calibration device for calibration experiment.By using least square method

for fitting center wavelength and calculated variables of demodulation instrument obtain static calibration coefficient of FBG strain sensor

and analyze uncertainty of calibration device.Results show that synthesis uncertainty of calibration is 2.55 × 10-6

sensitivity of FBG strain sensor is 1.37 × 10-3nm /10-6

linearity is 99.72 %

satisfy requirement of calibration of FBG strain sensor

the sensor can be applied to engineering practice.