介绍利用电磁场的分解来分析纵向非均匀光栅的方法。
An efficient method of analyzing the laterally periodic gratings which are inhomogeneous in the vertical direction by decomposing the field is presented.
当非均匀应变场作用在光纤布拉格光栅（FBG）上时，由于FBG周期和有效折射率在沿FBG长度方向都为变量，所以会导致光谱形状的变化。
The spectrum of fiber Bragg grating(FBG) in inhomogeneous strain fields is distorted due to its inhomogeneity of both the periods and the effective refractive index.
利用这些规律可做一般光纤光栅无法比拟的光纤光栅非均匀温变传感器以及对温变呈梳状反映的传感器。
Make the optical fiber grating nonuniform temperature variation field sensor and comb sensor by use of these results.
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