应变和温度同时测量的交叉灵敏度分析

An Analysis of Cross-sensitivity for Simultaneous Measurement of Strain and Temperature with Elliptical-core Fiber Sensors

运用高双折射椭圆纤芯光纤应变和温度灵敏度的公式及相应的泰勒展开式.给出了估计交叉灵敏度大小的公式,阐明了文物理意义,并结合实际数据估计了忽略交叉灵敏度.对于任意应变和温度变化值,由线性方程组求得的解与实际值间的误差.得出了一些具有实际意义的结论.

Utilizing a theoretical model and Taylor expansion, the formula of cross-sensitivity, which can evaluate the practical elliptical-core fiber sensor for simultaneous measurement of strain and temperature, is presented. Physical meaning of the cross-sensitivity is given. With the experimental data the errors induced by the crass-sensitivity are calculated and some conclusions are obtained.