中文摘要：

为了提高光纤布拉格光栅（FBG）温度传感器的测温精度,提出了一种新型的光纤布拉格光栅（FBG）温度传感器的封装方法,并采用二次多项式拟合的方式标定该温度传感器。新的封装方法可以消除FBG温度传感器存在的应力交叉敏感,新的标定方式可以极大地提高光纤温度传感器的测温精度。通过对比光纤温度传感器的线性拟合和二次多项式拟合测温结果,表明这种封装方法结合二次多项式标定使得光纤温度传感器具有很好的稳定性和重复性。在0℃~80℃的温度范围内,曲线拟合度在0.9999以上,测温误差不超过0.13℃,能够满足实际工程应用的需求。

英文摘要：

In order to improve the accuracy of the FBG temperature sensor,a new packaging method is proposed and the detected temperatures are fitted by quadratic polynomial function. The new packaging method can eliminate the cross-sensitivity of stress. Linear fitting and quadratic polynomial fitting are applied respectively,and the sensor demonstrates good stability and repeatability by quadratic polynomial fitting. The degree of the quadratic polynomial fitting is greater than 0. 9999 and the temperature error is less than 0. 13℃ in the temperature range of 0℃ ~ 80℃. The proposed sensor can be applied in engineering practice with good accuracy and reliability.