仿真FBG传输特性，共三个函数，利用光纤的传数矩阵和耦合模理论，可在main函数中修改参数-Simulation FBG transmission characteristics of the three functions, the use of optical fiber transmission matrix and coupled-mode theory, the parameters can be modified in the main function

通过传递矩阵理论计算多层膜结构的反射及透射率(Calculation of reflection and transmittance of multilayer structures by transfer matrix theory)