Thank you and I will try increasing the resolution.
My research lies in physically-based rendering in Computer Graphics,
where I would like to apply wave optics to improve the accuracy of
ray-based material models used in computer graphics. We are making the
assumption that we are in the
If it is just a problem with the precise grid, then it should go away as you
increase the resolution. If the problem doesn't disappear with increasing
resolution, then you have a bug somewhere else.
(However, I'm curious about what you hope to learn from the far field. In a
periodic
Thank you Ardavan for the reference. My understanding of
the near2far feature in cylindrical coordinate and the example is that we
have rotational symmetry of the problem. In my case, I'm interested in a
general cylinder that is periodic in the cylinder axis direction but does
not necessarily have
Hmm I was trying to efficiently compute contribution from a periodic
cylinder structure and avoid the expensive spatial sum used in MEEP. I
don’t think this functionality was implemented MEEP currently.
On Sun, Nov 8, 2020 at 9:36 PM Ardavan Oskooi
wrote:
> For reference, note that the near2far
For reference, note that the near2far feature already exists for
cylindrical coordinates. It was added in
https://github.com/NanoComp/meep/pull/1090. (This implementation is
based on integrating over φ using green3d.) For a demonstration, see
this tutorial example
Thank you so much for these pointers and they helped me a lot. I was able
to implement a 3D Periodic Green's Function (PGF) in MEEP based on equation
3 in Rapidly Convergent Representations for Periodic Green’s Functions of a
Linear Array in Layered Media (
> On Nov 2, 2020, at 11:49 AM, Mandy Xia wrote:
> Thank you so much Steven for this step-by-step explanation! It makes much
> more sense to me now.
>
> Regarding the actual field calculation, I noticed that green3d uses the point
> source field computation from a dielectric dipole moment
Thank you so much Steven for this step-by-step explanation! It makes much
more sense to me now.
Regarding the actual field calculation, I noticed that green3d uses the
point source field computation from a dielectric dipole moment (adopted
from SCUFF-EM with some modification that changes
> On Nov 2, 2020, at 1:35 AM, Mandy Xia wrote:
> My high-level understanding of the near to far field calculation is that it
> uses dft to compute equivalent current on the near field box and convolve
> with the green's function to compute the field in the far field. When I
> looked into the
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