$solvecavitymode

$solvecavitymode
wavelength, Emode
refrac(1)
refrac(2)
...
refrac(n)

Wavelength unit is in cm
Emode function is disable (set to be 1 for TE mode only)

The $solvecavitymode setting in GUI interface is here
1. Press Additional Functions.
2. Press Refractive index & absorption.
3. Fill in the field for wave length (cm), choose TE, and enter the Refractive index as needed!