Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Replace blocks with prism in mode-decomposition.py #369

Merged
merged 1 commit into from
Jun 8, 2018
Merged

Replace blocks with prism in mode-decomposition.py #369

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
49 changes: 20 additions & 29 deletions doc/docs/Python_Tutorials/Mode_Decomposition.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -40,37 +40,28 @@ def main(args):
sy = dpml+dair+w2+dair+dpml
cell_size = mp.Vector3(sx,sy,0)

geometry = [ mp.Block(material=Si, center=mp.Vector3(0,0,0), size=mp.Vector3(mp.inf,w1,mp.inf)) ]
prism_x = sx + 1
half_w1 = 0.5 * w1
half_w2 = 0.5 * w2
half_Lt = 0.5 * Lt

if Lt > 0:
geometry.append(mp.Block(material=Si, center=mp.Vector3(0.5*sx-0.5*(Lt+Lw+dpml),0,0), size=mp.Vector3(Lt+Lw+dpml,w2,mp.inf)))

hh = w2
ww = 2*Lt

# taper angle (CCW, relative to +X axis)
rot_theta = math.atan(0.5*(w2-w1)/Lt)

pvec = mp.Vector3(-0.5*sx+dpml+Lw,0.5*w1,0)
cvec = mp.Vector3(-0.5*sx+dpml+Lw+0.5*ww,0.5*hh+0.5*w1,0)
rvec = cvec-pvec
rrvec = rvec.rotate(mp.Vector3(0,0,1), rot_theta)

geometry.append(mp.Block(material=mp.air, center=pvec+rrvec, size=mp.Vector3(ww,hh,mp.inf),
e1=mp.Vector3(1,0,0).rotate(mp.Vector3(0,0,1),rot_theta),
e2=mp.Vector3(0,1,0).rotate(mp.Vector3(0,0,1),rot_theta),
e3=mp.Vector3(0,0,1)))

pvec = mp.Vector3(-0.5*sx+dpml+Lw,-0.5*w1,0)
cvec = mp.Vector3(-0.5*sx+dpml+Lw+0.5*ww,-(0.5*hh+0.5*w1),0)
rvec = cvec-pvec
rrvec = rvec.rotate(mp.Vector3(0,0,1),-rot_theta)

geometry.append(mp.Block(material=mp.air, center=pvec+rrvec, size=mp.Vector3(ww,hh,mp.inf),
e1=mp.Vector3(1,0,0).rotate(mp.Vector3(0,0,1),-rot_theta),
e2=mp.Vector3(0,1,0).rotate(mp.Vector3(0,0,1),-rot_theta),
e3=mp.Vector3(0,0,1)))

vertices = [mp.Vector3(-prism_x, half_w1),
mp.Vector3(-half_Lt, half_w1),
mp.Vector3(half_Lt, half_w2),
mp.Vector3(prism_x, half_w2),
mp.Vector3(prism_x, -half_w2),
mp.Vector3(half_Lt, -half_w2),
mp.Vector3(-half_Lt, -half_w1),
mp.Vector3(-prism_x, -half_w1)]
else:
vertices = [mp.Vector3(-prism_x, half_w1),
mp.Vector3(prism_x, half_w1),
mp.Vector3(prism_x, -half_w1),
mp.Vector3(-prism_x, -half_w1)]

geometry = [mp.Prism(vertices, height=100, material=Si)]

boundary_layers = [ mp.PML(dpml) ]

# mode wavelength
Expand Down
47 changes: 19 additions & 28 deletions python/examples/mode-decomposition.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,36 +20,27 @@ def main(args):
sy = dpml + dair + w2 + dair + dpml
cell_size = mp.Vector3(sx,sy,0)

geometry = [ mp.Block(material=Si, center=mp.Vector3(0,0,0), size=mp.Vector3(mp.inf,w1,mp.inf)) ]
prism_x = sx + 1
half_w1 = 0.5 * w1
half_w2 = 0.5 * w2
half_Lt = 0.5 * Lt

if Lt > 0:
geometry.append(mp.Block(material=Si, center=mp.Vector3(0.5*sx-0.5*(Lt+Lw+dpml),0,0), size=mp.Vector3(Lt+Lw+dpml,w2,mp.inf)))

hh = w2
ww = 2*Lt

# taper angle (CCW, relative to +X axis)
rot_theta = math.atan(0.5*(w2-w1)/Lt)

pvec = mp.Vector3(-0.5*sx+dpml+Lw,0.5*w1,0)
cvec = mp.Vector3(-0.5*sx+dpml+Lw+0.5*ww,0.5*hh+0.5*w1,0)
rvec = cvec-pvec
rrvec = rvec.rotate(mp.Vector3(0,0,1), rot_theta)

geometry.append(mp.Block(material=mp.air, center=pvec+rrvec, size=mp.Vector3(ww,hh,mp.inf),
e1=mp.Vector3(1,0,0).rotate(mp.Vector3(0,0,1),rot_theta),
e2=mp.Vector3(0,1,0).rotate(mp.Vector3(0,0,1),rot_theta),
e3=mp.Vector3(0,0,1)))

pvec = mp.Vector3(-0.5*sx+dpml+Lw,-0.5*w1,0)
cvec = mp.Vector3(-0.5*sx+dpml+Lw+0.5*ww,-(0.5*hh+0.5*w1),0)
rvec = cvec-pvec
rrvec = rvec.rotate(mp.Vector3(0,0,1),-rot_theta)

geometry.append(mp.Block(material=mp.air, center=pvec+rrvec, size=mp.Vector3(ww,hh,mp.inf),
e1=mp.Vector3(1,0,0).rotate(mp.Vector3(0,0,1),-rot_theta),
e2=mp.Vector3(0,1,0).rotate(mp.Vector3(0,0,1),-rot_theta),
e3=mp.Vector3(0,0,1)))
vertices = [mp.Vector3(-prism_x, half_w1),
mp.Vector3(-half_Lt, half_w1),
mp.Vector3(half_Lt, half_w2),
mp.Vector3(prism_x, half_w2),
mp.Vector3(prism_x, -half_w2),
mp.Vector3(half_Lt, -half_w2),
mp.Vector3(-half_Lt, -half_w1),
mp.Vector3(-prism_x, -half_w1)]
else:
vertices = [mp.Vector3(-prism_x, half_w1),
mp.Vector3(prism_x, half_w1),
mp.Vector3(prism_x, -half_w1),
mp.Vector3(-prism_x, -half_w1)]

geometry = [mp.Prism(vertices, height=100, material=Si)]

boundary_layers = [ mp.PML(dpml) ]

Expand Down
9 changes: 8 additions & 1 deletion python/tests/mode_coeffs.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,14 @@ def run_mode_coeffs(self, mode_num, kpoint_func):
sy = dpml + dair + w + dair + dpml
cell_size = mp.Vector3(sx, sy, 0)

geometry = [mp.Block(material=Si, center=mp.Vector3(), size=mp.Vector3(mp.inf, w, mp.inf))]
prism_x = sx + 1
prism_y = w / 2
vertices = [mp.Vector3(-prism_x, prism_y),
mp.Vector3(prism_x, prism_y),
mp.Vector3(prism_x, -prism_y),
mp.Vector3(-prism_x, -prism_y)]

geometry = [mp.Prism(vertices, height=100, material=Si)]

boundary_layers = [mp.PML(dpml)]

Expand Down