一篇研究光纤光栅的文献，文件中介绍了光纤光栅耦合模的推导原理，并给出了数值求解的结果-A study of fiber grating literature, the paper describes the derivation of coupled-mode fiber grating theory, and gives the results of numerical solution

均匀光纤光栅 该程序给出了均匀布拉格光栅的得简单画法-function FBG8_reflectivity