Reply To: Phase response vs. wavelength

[Dimitris Polyzos]

Hello Leonid, 

Thanks for your reply. The phase (angle "a") is referenced to the input modal field propagation and it depends on the location of the monitors and the mesh size. I assume that you use a source with input mode, its position relative to the recording monitor position, in the waveguide for example, will return a phase difference. You can check that by adding some  monitors with a specific spacing between them and check the phase compared to the source monitor. I would expect that the phase would increase as you check the monitors further away from the source. A schematic of you model would be helpful as well.

I hope I helped. Let me know if you need further assistance.

Kind regards

Dimitris