Dear Dr.Steven and meep users,
I am trying to find the transmission spectrum
of a straight waveguide using a gaussian source.
I am getting
negative values for some
frequenciesand for some, the transmission shoots up, way more than 1.The
intensity is very less too.
frequency
incident flux
transmitted flux
fux2:
0.610151515151515
-9.70715540181083e-5
3.61878776165123e-6
flux2:
0.611161616161616
-1.3586153173961e-4
3.18042124444992e-6
flux2:
0.612171717171717
-2.08814643514626e-4
-1.8376793917394e-7
>From what I could gather by reading the archives, this
behavior might be due to improper normalization.
My structure
is a straight waveguide. The way I am normalizing is by defining two
flux regions , one at the input, just after the source and another at
the end of the waveguide.
-------------------------------------------------------
Source input flux
output flux
------------------------------------------------------
transmission
= output flux/input flux
Normally, if we have structure with
say cavities, then to normalise, we run meep without the cavities to
find the incident flux.
In my structure, since it is just a
straight waveguide, what would be the proper way of
normalization? Is there any other reason for such a behavior?
I am attaching the ctl file for reference.
Thanks a lot,
Sanchit
cant_on_sub_Spectra_Gauss_old.ctl
Description: Binary data
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