Reply To: Check list of revising the transmission data in Bragg Grating Waveguide

[Guilin Sun]

This will need long simulation time, smaller autshotoff min, and proper PML settings, such as number of PML layers (in total about half wavelength thick). As you can see from your result, it has ripples, which indicates the actual simulation time is not long enough.

Oce the curve is smooth, then you will need to use finer mesh, and keep PML away (half wavelength) from grating teeth.

 

There are some fine-tuning works to be done.

Please check this post for comparison: 

Ansys Insight: Why my simulation result is different from published paper or experiment?

 

Accurate frequency-domain result will need sufficient time and smaller autoshutoff min , as well as higher mesh accuracy, low PML reflection etc.