用于matlab仿真任意切趾的均匀光栅或者切趾光栅，主程序stepchirp.m(Numerically simulation for chirp or uniform fiber Bragg grating by Matlab. Main proceedings: stepchirp.m)

超结构光栅、啁啾光栅、长周期光栅切趾仿真(The simulation of the chirped grating and the long period grating)

均匀光栅，切趾光栅，取样光栅，相移光栅，啁啾光栅的反射谱仿真(reflection spectrum simulation of chirped grating,uniform grating,apodized grating, sampled grating, phase-shifted grating)