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import sys
import unittest
import meep as mp
class TestWvgSrc(unittest.TestCase):
def setUp(self):
cell = mp.Vector3(16, 8)
geometry = [
mp.Block(
center=mp.Vector3(),
size=mp.Vector3(mp.inf, 1, mp.inf),
material=mp.Medium(epsilon=12),
),
mp.Block(
center=mp.Vector3(y=0.3),
size=mp.Vector3(mp.inf, 0.1, mp.inf),
material=mp.Medium(),
),
]
sources = [
mp.EigenModeSource(
src=mp.ContinuousSource(0.15),
size=mp.Vector3(y=6),
center=mp.Vector3(x=-5),
component=mp.Dielectric,
eig_parity=mp.ODD_Z,
)
]
pml_layers = [mp.PML(1.0)]
self.sim = mp.Simulation(
cell_size=cell,
geometry=geometry,
sources=sources,
boundary_layers=pml_layers,
force_complex_fields=True,
resolution=10,
)
def test_wvg_src(self):
self.sim.run(until=200)
flux1 = self.sim.flux_in_box(
mp.X, mp.Volume(center=mp.Vector3(-6.0), size=mp.Vector3(1.8, 6))
)
flux2 = self.sim.flux_in_box(
mp.X, mp.Volume(center=mp.Vector3(6.0), size=mp.Vector3(1.8, 6))
)
self.assertAlmostEqual(flux1, -1.775216564842667e-03)
places = 5 if mp.is_single_precision() else 7
self.assertAlmostEqual(flux2, 7.215785537102116, places=places)
if __name__ == "__main__":
unittest.main()
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