Hi guys,
I apologize for jumping into this topic but maybe you can clarify my doubts about convergence time and time steps, together with time step size. In an usual simulation (let’s say a 2D silicon waveguide in air simulation), if we keep all options to “auto” at the Simulation Parameters window, we find that the EM energy almost reaches (see Note: please) the end of simulation. Is this to prevent the interference of the reflected wave? If so, shouldn’t APML be able to cancel out all reflections?
As Scott and Damian mentioned, if there are resonant features or cavities we should increase our spatial resolution. For a higher spatial resolution shouldn’t we also increase the number of time steps or is it better to keep it “auto”? I mentioned this because whenever I increase simulation time steps, field amplitudes vary…
Note: I am attaching an image of what I mean by “… EM energy almost reaches…”.
Thank you in advance.
Best regards.