In Lumerical MODE EME, we can simulate the behaviour of devices with multi-mode ports, e.g., injecting both fundamental TE and fundamental TM (e.g., polarization splitter rotator), by choosing user select modes, then shift-selecting multiple modes.
We are wondering how one can achieve this in a script? Presently, we have a complete simulation that is scripted, except for the mode selection has to be done by hand for all the ports.
Same question for FDTD Ports.
Thank you
Lukas
Hi Professor Chrostowski @lukasc
I think that the frequency sweep in MODE Solutions works properly for one selected mode.It’s currently not possible to select multiple modes from the script. But, as @nlui has already said it is possible in the GUI to multi-select modes from the mode list and track them all in a single frequency sweep in the FDE solver.
However, if you want to do a sweep for multiple modes then you can use a “for” loop in your script to select different modes.
Best Regards
Konstantinos
Hi Konstantinos,
Thanks for your comments. This question is not concerning the FDE solver, but the question/problem is the same. I know that for loops are a solution, but they don’t let you take advantage of the built-in S-Parameter extraction capabilities implemented in FDTD.
It would be a lot easier to select multiple modes, e.g., if X was a vector in:
updatesourcemode(X);
Hi,
It is possible to use the updateportmodes script command to select multiple modes from the script for both the EME ports and FDTD ports:
https://kb.lumerical.com/en/index.html?ref_scripts_updateportmodes.html
