I'm trying to figure out related issues, and as far as I can tell, negative transmission values can occur for a few different reasons. One reason is just flux passing through a detection volume in a negative direction. Another reason, in the case of dft flux objects, seems to be due to the calculation of the fourier transform of the fields in a volume. In my case, what I am seeing is that the flux in a box over time, which normally drops to near-zero if I'm using a flux_vol object, retains some significant non-zero values if I instead use a dft_flux object. The best solution I've found right now is to output fields or flux values over time and do a sanity check (for unwanted reflections, inaccuracy due to low resolution, etc.) by eye.
If I am saying things that are wrong, dumb, ill-informed, etc., I'd love for someone more knowledgeable to jump in and correct me. On Fri, Oct 17, 2014 at 12:07 PM, Narendra Honnalli <nvhon...@ncsu.edu> wrote: > Yes, I have! For my code I am getting a blend of positive and negative > values and have a hard time interpreting them or plot the transmission > spectrum. I will display the code and the output on request.Can anyone > help me? > > > > > _______________________________________________ > meep-discuss mailing list > meep-discuss@ab-initio.mit.edu > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss >
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