Hello,
I am simulating photonic structures in a multi-mode waveguide operation. For this, I am using numerical ports for exciting specifc modes in the waveguides and using numerical ports as well for measuring transmission values of specific modes. Comsol offers some predefined expressions for the transmittance by port name: ewfd.TportX .
My question is, how specifically these values are calculated and how they compara to the S-Parameters feature in the RF-module. My guess is, that they are equivalent to each other and are calculated in the same manner.
I am using the Wave Optics module and Comsol Version 5.4.
Thank you very much