用传输矩阵法对具有不同参数的λ／４移相结构、多节λ／４移相结构、有效折射率调制结构、耦合系数调制结构和“缝合”误差结构等五种光栅子结构进行了数值模拟计算。模拟结果解释了作者研制的均匀光纤光栅、相移光纤光栅的传输谱，也验证了其他研究小组发表的实验结果。通过对各种结构的系统研究，提出了一些新的利用光纤光栅的设想。 The transmission matrix method was used to calculate the numerical values ​​of five grating substructures, λ / 4 phase shifting structure with different parameters, multi-section λ / 4 phase shifting structure, effective refractive index modulation structure, coupling coefficient modulation structure and " Simulation calculation. The simulation results explain the transmission spectrum of the uniform fiber grating and phase-shift fiber grating developed by the author, and also verify the experimental results published by other research groups. Through systematic research on various structures, some new ideas of using fiber gratings are proposed.