Reply To: How to calculate transmissivity of left/right circular polarization separately?

[Guilin Sun]

it is a very broad question without specific simulation/device.

The simplest way is to excite left/right circular polarizarion and quantify their results.

If you want to quantify the polarization from the output fields, you can decompose them, for exmple

E1=sqrt(2)/s*(Ex+jEy)

E2=sqrt(2)/2*(Ex-iEy)

As for which one is left or right circu polarization it is up to you from your definition since there are two opposite definitions.

if you can decompose H fields, you will be able to get the correct transmission by following  https://optics.ansys.com/hc/en-us/articles/360034405354-transmission-Script-command

Following the same procedure, you can decompoae the fields anywhere inside the simulation volume if you want.

This is a more theoretical question than simulation.