iam trying to simulate a directional coupler via varFTDT.
the problem is my field profile is always cut off after a specific propagation distance (about 100µm), no matter how i set the parameters (design of coupler, mesh settings, boundary conditions, etc).
anybody encoutered a similar problem? is it maybe due low memory?
iam running the simulations on a intel core i7-3770 processor (8M Cache, 3.4 GHz) and 8 GB RAM.
thanks for all your help!directional_coupler_varFTDT.lms (1.3 MB)