On Dec 18, 2008, at 6:53 AM, Hudelist, Florian wrote:
I am just trying to get into meep and ran a couple of test
structures. I have a problem with just a plane wave propagating in
free space. I am running 3d simulations. If I add a PML on each side
of the computational space and introduce a plane wave source the
light is not just propagating but gets somehow focused a couple of
wavelength away from the source. The source is not extended into the
PML. Is that a normal characteristic of FDTD simulations? Will this
influence the results if I introduce a structured medium?
It sounds like the source is inside the PML.
Realize that, when you specify a PML layer, the PML layer goes
*inside* the computational cell, adjacent to the boundaries. It does
not increase the size of the computational cell to add a PML layer
outside.
Steven
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