import mx
import os
baseName = "phc-sapph-r0.37"
dim = 3
l = 1.0
o = -0.5
# the object
sph = mx.Sphere(0.37, [0.0, 0.0, 0.0])
epsDiag = [10.225, 10.225, 9.95]
epsOffDiag = [0.67360967926537398, -0.67360967926537398, -0.825]
diel = mx.Dielectric(sph, epsDiag=epsDiag, epsOffDiag=epsOffDiag)
# the solver
solver = mx.Eigensolver()
#resolutions = range(8, 32)
resolutions = [36]
print resolutions
for r in resolutions:
name = baseName + "-%.3d" % r
grid = mx.Grid(dim * [r], dim * [o], dim * [l])
sim = mx.Simulation(name, dim)
sim.setGrid(grid)
sim.addDielectric(diel)
#sim.setLinearSolverParameters({"sweeps": 5, "type": "gmg-gmres", "levels": 3, "basis": 20})
sim.setSolver(solver)
def main():
# create the cmd line parser
parser = argparse.ArgumentParser()
# Just examples for now
parser.add_argument("-m",
"--maximum-time",
help="Maximum time (seconds) the job will run",
action="store",
dest="maxtime",
type=int)
parser.add_argument("-t",
"--testing",
help="test signal catching",
action="store_true")
(args, unkargs) = parser.parse_known_args()
# Basic parameters from Zhu, Brown,
# "Full-vectorial finite-difference analysis of microstructured optical fibers"
# The calculation window is chosen to be the first quadrant of the fiber
# cross section with a computation window size of 6um by 6 um.
fiberRadius = 3.e-6
refractionIndex = 1.45
n_eff = 1.438604 # Computed value
wavelen = 1.5e-6
relPermittivity = refractionIndex**2
vacWavelen = wavelen * refractionIndex
freq = speed_of_light / (wavelen / n_eff)
print("Vacuum wavelength = %g, frequency = %g" % (vacWavelen, freq))
# Grid parameters
resolution = 0.05 # Number of cells per wavelength
endyz = 6.e-6
bgnyz = -endyz
lenyz = endyz - bgnyz
dl = resolution * fiberRadius
yzcells_half = int(endyz / dl)
yzcells = 2 * yzcells_half
xcells = 2
lenx = xcells * dl
print("%d cells in the x direction, %d cells in the y and z directions." %
(xcells, yzcells))
# set the grid
dim = 3
grid = mx.Grid([xcells, yzcells, yzcells], [0., bgnyz, bgnyz],
[lenx, lenyz, lenyz])
# boundary conditions
bcs = mx.BoundaryConditions()
bcs.setLowerBCs(['periodic', 'pec', 'pec'])
bcs.setUpperBCs(['periodic', 'pec', 'pec'])
kay = n_eff * 2. * math.pi / vacWavelen
phaseShift = kay * lenx
bcs.setPhaseShifts([phaseShift, 0., 0.])
print("phase shift = %g." % (phaseShift))
cylLen = lenx + 4. * dl
cylStart = -2. * dl
cyl = mx.Cylinder(fiberRadius, [1., 0., 0.], [cylStart, 0., 0.])
# mu = mx.Mu(sph, muDiag=[9.4, 9.4, 11.6], losstan=0.e-1)
diel = mx.Dielectric(
cyl, epsDiag=[relPermittivity, relPermittivity, relPermittivity])
# setup simulation
baseName = "cylinder" # Should come from args
sim = mx.Simulation(baseName, dim)
sim.setGrid(grid)
sim.addDielectric(diel)
sim.setBCs(bcs)
# create new eigensolver object
eig = mx.Eigensolver()
eig.setParams({"nev": 10, "basis": 30})
prec = mx.AMG()
lin = mx.LinearSolver(prec=prec)
# lin.setParams({"sweeps": 2, "type": "gmres",
# "prec type": "amg",
# "smoother": "Chebyshev",
# "levels": 10, "basis": 20})
eig.setLinearSolver(lin)
sim.setSolver(eig)
# Write input file and run simulation
sim.write()
mxwl = "../../builds/maxwell/ser/src/maxwell"
exline = mxwl + " --infile=" + baseName + ".mx"
print(exline)
if os.path.isfile(mxwl):
os.system(exline)
bcs.setPhaseShifts(
[factor * math.pi / 4., factor * math.pi / 3., factor * math.pi])
#bcs.setPhaseShifts([0, 0, factor*math.pi])
sph = mx.Sphere(0.37, [l / 2., l / 2., l / 2.])
mu = mx.Mu(sph, muDiag=[9.4, 9.4, 11.6], losstan=0.e-1)
#diel = mx.Dielectric(sph, epsDiag=[1.0, 1.0, 1.0])
# setup simulation
sim = mx.Simulation(baseName, dim)
sim.setGrid(grid)
sim.addMu(mu)
sim.setBCs(bcs)
# create new eigensolver object
eig = mx.Eigensolver()
eig.setParams({"nev": 10, "basis": 30})
#eig.setParams({"nev": 20, "basis": 30, "shift": -2.0})
lin = mx.LinearSolver()
"""
lin.setParams({"sweeps": 2, "type": "gmres",
"prec type": "amg",
"smoother": "Chebyshev",
"levels": 10, "basis": 20})
"""
eig.setLinearSolver(lin)
sim.setSolver(eig)
sim.write()