I want to simulate fiber Bragg grating in MATLAB for different apodizations and chirps.
The simulation for the chirp-free mode is close to the results of the optisystem (for example, the phase diagram).
I have attached an example of the written code. In my opinion, the n parameter should be modified in the kappa and sigma section, according to the reference article, the “dc” index change spatially averaged over a grating period, should be applied but I don’t know how to calculate this. the other section is dpi/dz.
Can anyone help me?
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