Note that due to the Fourier Uncertainty Principle, the runtime should
be at least ~1/frequency resolution. In practice, the runtime may even
have to be twice as large as demonstrated in
I've tried increasing PML thickness (went up to 8 micron) and resolution
(went up to 150). As for run time, I am using the decay factor, and have
manually been terminating it when the reflectances exceed unity. I think
the maximum time I've run for is around 3000 units.
On 2020-08-14 9:11
For additional details regarding PMLs in Meep, see:
https://meep.readthedocs.io/en/latest/Perfectly_Matched_Layer/.
As described in
https://meep.readthedocs.io/en/latest/FAQ/#checking-convergence, you
need to check the convergence by increasing the resolution, PML
thickness, and run time
Thanks, but it seems like this doesn't change much. I turned off
subpixel averaging, increased the resolution to 100, and also increased
the PML thickness to 1.2 (=max wavelength). I have run so far for 1800
time units. At 25 time units, the field decay was 0.0090 whereas at 1725
time units
Try turning off subpixel averaging since it sometimes causes
instabilities with the prism sidewall angle feature. This means that you
will also need to increase the resolution.
On 7/29/20 16:38, J. Philip Haupt wrote:
I get that the fields diverge (albeit very slowly), at least so it
seems.
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