1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
import unittest
import meep as mp
class TestChunks(unittest.TestCase):
def test_chunks(self):
sxy = 10
cell = mp.Vector3(sxy, sxy, 0)
fcen = 1.0 # pulse center frequency
df = 0.1 # pulse width (in frequency)
sources = [mp.Source(mp.GaussianSource(fcen, fwidth=df), mp.Ez, mp.Vector3())]
dpml = 1.0
pml_layers = [mp.PML(dpml)]
resolution = 10
sim = mp.Simulation(cell_size=cell,
boundary_layers=pml_layers,
sources=sources,
resolution=resolution)
top = mp.FluxRegion(center=mp.Vector3(0,+0.5*sxy-dpml), size=mp.Vector3(sxy-2*dpml,0), weight=+1.0)
bot = mp.FluxRegion(center=mp.Vector3(0,-0.5*sxy+dpml), size=mp.Vector3(sxy-2*dpml,0), weight=-1.0)
rgt = mp.FluxRegion(center=mp.Vector3(+0.5*sxy-dpml,0), size=mp.Vector3(0,sxy-2*dpml), weight=+1.0)
lft = mp.FluxRegion(center=mp.Vector3(-0.5*sxy+dpml,0), size=mp.Vector3(0,sxy-2*dpml), weight=-1.0)
tot_flux = sim.add_flux(fcen, 0, 1, top, bot, rgt, lft)
sim.run(until_after_sources=mp.stop_when_fields_decayed(50, mp.Ez, mp.Vector3(), 1e-5))
sim.save_flux('tot_flux', tot_flux)
sim.reset_meep()
geometry = [mp.Block(center=mp.Vector3(), size=mp.Vector3(sxy, sxy, mp.inf), material=mp.Medium(index=3.5)),
mp.Block(center=mp.Vector3(), size=mp.Vector3(sxy-2*dpml, sxy-2*dpml, mp.inf), material=mp.air)]
sim = mp.Simulation(cell_size=cell,
geometry=geometry,
boundary_layers=pml_layers,
sources=sources,
resolution=resolution)
tot_flux = sim.add_flux(fcen, 0, 1, top, bot, rgt, lft)
sim.load_minus_flux('tot_flux', tot_flux)
sim.run(until_after_sources=mp.stop_when_fields_decayed(50, mp.Ez, mp.Vector3(), 1e-5))
self.assertAlmostEqual(86.90826609300862, mp.get_fluxes(tot_flux)[0])
if __name__ == '__main__':
unittest.main()
|
