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from __future__ import division
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 / -1.8, 7.125912849303947e-5)
self.assertAlmostEqual(flux2 / 1.8, 0.2898392510553291)
if __name__ == '__main__':
unittest.main()
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