jan/meanas
Watch
1
0
Fork
You've already forked meanas
 0
Code Issues Pull requests Releases Wiki Activity

[docs] document scattering conventions and frozen-basis workflows

Browse source 
Update examples for sampled-interface tapers, explicit physical CPML spacing, copied SCPML widths, and the consolidated complex mode solver. Document breaking API changes, overlap measures, and PML convergence.
This commit is contained in:
Forgejo Actions 2026-10-18 23:07:53 -07:00
commit 7e407dd1ac
10 changed files with 152 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

11
examples/eme_taper_cmt.py
View file

@ -1,5 +1,5 @@
"""
Local-mode CMT example for a continuously varying rib-waveguide taper.
Sampled-interface EME example for a continuously varying rib-waveguide taper.
This example keeps geometry construction outside `meanas.fdfd.eme`: it samples a
width taper at several cross-sections, solves and normalizes each local mode with
@ -112,14 +112,15 @@ def print_summary(
print('sampled taper effective indices:', ', '.join(f'{value:.5f}' for value in neffs))
print(f'abrupt endpoint reflection |S_00|^2 = {abs(abrupt_s[0, 0]) ** 2:.6f}')
print(f'abrupt endpoint transmission |S_{n_modes},0|^2 = {abs(abrupt_s[n_modes, 0]) ** 2:.6f}')
print(f'taper CMT reflection |S_00|^2 = {abs(taper_s[0, 0]) ** 2:.6f}')
print(f'taper CMT transmission |S_{n_modes},0|^2 = {abs(taper_s[n_modes, 0]) ** 2:.6f}')
print(f'taper CMT total output power = {numpy.sum(abs(taper_s[:, 0]) ** 2):.6f}')
print(f'taper reflection |S_00|^2 = {abs(taper_s[0, 0]) ** 2:.6f}')
print(f'taper transmission |S_{n_modes},0|^2 = {abs(taper_s[n_modes, 0]) ** 2:.6f}')
print(f'taper total output power = {numpy.sum(abs(taper_s[:, 0]) ** 2):.6f}')
def main() -> None:
sections, neffs, _omega, dxes_2d = solve_taper_sections()
taper_s = eme.get_taper_s(sections, dxes=dxes_2d)
prepared = eme.prepare_taper(sections, dxes=dxes_2d)
taper_s = eme.evaluate_taper_s(prepared)
abrupt_s = eme.get_s(
sections[0].modes,
sections[0].wavenumbers,