Reply To: Far-field planar mode projection

[eugenio.digaetano]

Great, thanks for the suggestion. If so, I would try to avoid the planar projection if so as I need to simulate the mode expansion between 1 and 10 um from the facet.

I tried your suggested example "Facet-reflection-and-transmission-calculations" and works well for what I need. My aim is to calculate the power coupling between two waveguides at a specific distance from each other. The example is really useful to calculate the mode distribution of one of the waveguides after a distance but how can I check its power coupling with the other one? I could use a full 3D-FDTD simulation with mode expansion monitors but I would prefer to use an overlap analysis as quick test before a long simulation as final one. I noted that FDTD has the overlap function between two monitor modes, is there a function to find the best position for coupling such as "optimizeposition"?

Alternatively, I was wondering whether I can export the mode from a monitor in zbf format and load it in the d-card of the FDE overlap analysis tab. It seems possible but does not recognise the overlap.