On Sun, 5 Nov 2006, Simone Sugliani wrote:
This is my first post and I would thank Steven Johnson and ab-initio MIT
group for their great work. I'm trying to simulate an optical graded
index waveguide in order to obtain some useful project parameters. I
have calculated the modal behaviour of the structure at a given
frequency using MPB. Could you suggest to me the simplest way to excite
the waveguide with the exact modal field pattern (*.h5) found in MPB?
I've done this in the C++ interface by reading the mode field pattern into
an array (via the h5file::read function), and then defining the current
amplitude function as a function that interpolates from this array.
It's a bit trickier to do in the libctl interface because the HDF5 I/O
functions are not directly accessible there.
Steven
PS. The next release of MPB will be callable as a library, so my plan is
to directly hook this in to Meep so that you can tell it to compute the
eigenmode in a given region and use it as a source. No ETA on this
feature yet, though.
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