How to extract S parameter automatically in mode solution ?

Hi,

Can i extract s parameter automatically in mode solution?

Thanks

Qi

Hi Qi,

You can, it just depends on the solver you are using. For the EME solver, it’s straightforward, the EME solver returns the S-matrix of the device as the result of the simulation. If you need a frequency/wavelength dependent S-matrix, you will have to run a sweep over the frequency/wavelength range (that said, in some case, like the Bragg grating example, https://kb.lumerical.com/en/index.html?pic_passive_bragg_full_device_simulation_with_eme.html, the wavelength sweep is approximated by a length sweep).

For the varFDTD, you can extract the S parameters using the mode expansion monitors and a bit of scripting, as shown in the ring resonator example (https://kb.lumerical.com/en/index.html?pic_passive_getting_started_ring_resonator_mode2.html).

I hope this helps,

Greg