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Fix waveguide source computation for different polarities etc.

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This commit is contained in:
Jan Petykiewicz 2019-07-09 20:11:32 -07:00
parent 5dd26915fc
commit 2b3a74b737
1 changed files with 10 additions and 8 deletions
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18
fdfd_tools/waveguide_mode.py
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@ -101,6 +101,8 @@ def solve_waveguide_mode(mode_number: int,
if mu is None: if mu is None:
mu = [numpy.ones_like(epsilon[0])] * 3 mu = [numpy.ones_like(epsilon[0])] * 3
slices = tuple(slices)
''' '''
Solve the 2D problem in the specified plane Solve the 2D problem in the specified plane
''' '''
@ -183,23 +185,23 @@ def compute_source(E: field_t,
J = [None]*3 J = [None]*3
M = [None]*3 M = [None]*3
src_order = numpy.roll(range(3), axis) src_order = numpy.roll(range(3), -axis)
exp_iphi = numpy.exp(1j * polarity * wavenumber * dxes[1][axis][slices[axis]]) exp_iphi = numpy.exp(1j * polarity * wavenumber * dxes[1][axis][slices[axis]])
J[src_order[0]] = numpy.zeros_like(E[0]) J[src_order[0]] = numpy.zeros_like(E[0])
J[src_order[1]] = +exp_iphi * H[src_order[2]] * polarity J[src_order[1]] = +exp_iphi * H[src_order[2]] * polarity
J[src_order[2]] = -exp_iphi * H[src_order[1]] * polarity J[src_order[2]] = -exp_iphi * H[src_order[1]] * polarity
rollby = -1 if polarity > 0 else 0
M[src_order[0]] = numpy.zeros_like(E[0]) M[src_order[0]] = numpy.zeros_like(E[0])
M[src_order[1]] = +numpy.roll(E[src_order[2]], -1, axis=axis) M[src_order[1]] = +numpy.roll(E[src_order[2]], rollby, axis=axis)
M[src_order[2]] = -numpy.roll(E[src_order[1]], -1, axis=axis) M[src_order[2]] = -numpy.roll(E[src_order[1]], rollby, axis=axis)
A1f = functional.curl_h(dxes) m2j = functional.m2j(omega, dxes, mu)
Jm = m2j(M)
Jm_iw = A1f([M[k] / mu[k] for k in range(3)]) Jtot = [ji + jmi for ji, jmi in zip(J, Jm)]
for k in range(3):
J[k] += Jm_iw[k] / (-1j * omega)
return J return Jtot
def compute_overlap_e(E: field_t, def compute_overlap_e(E: field_t,