Is it possible to simulate the interface of two lattices? Similar to a 1D lattice with internal "structure"

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Hello everyone,

I'm interested in doing bandstructure calculations for a photonic crystal
of two different lattice structures. For instance, imagine (in 2D) a
lattice of rods of radius R1 for all lattice sites with y>0, and radius R2
for all lattice sites with y<0. (With R1 != R2 of course.)

In my mind, this would require simulating a 1D lattice, where the unit cell
is infinite in the y direction, periodic in x. This is quite similar to
previous discussions on mpb-discuss about simulating bragg reflectors. The
main difference with the bragg reflector case is that there is no internal
"structure" in the y direction in the unit cell, aka it is uniform in y.

Is a structure like this possible to create in MPB? Please let me know if
my description is unclear at all.

Thanks very much,
Chris

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<div dir=3D"ltr"><span style=3D"font-size:12.8px">Hello everyone,</span><br=
 style=3D"font-size:12.8px"><br style=3D"font-size:12.8px"><span style=3D"f=
ont-size:12.8px">I&#39;m interested in doing bandstructure calculations for=
 a photonic crystal of two different lattice structures. For instance, imag=
ine (in 2D) a lattice of rods of radius R1 for all lattice sites with y&gt;=
0, and radius R2 for all lattice sites with y&lt;0. (With R1 !=3D R2 of cou=
rse.)</span><br style=3D"font-size:12.8px"><br style=3D"font-size:12.8px"><=
span style=3D"font-size:12.8px">In my mind, this would require simulating a=
 1D lattice, where the unit cell is infinite in the y direction, periodic i=
n x. This is quite similar to previous discussions on mpb-discuss about sim=
ulating bragg reflectors. The main difference with the bragg reflector case=
 is that there is no internal &quot;structure&quot; in the y direction in t=
he unit cell, aka it is uniform in y.</span><br style=3D"font-size:12.8px">=
<br style=3D"font-size:12.8px"><span style=3D"font-size:12.8px">Is a struct=
ure like this possible to create in MPB? Please let me know if my descripti=
on is unclear at all.=C2=A0</span><br style=3D"font-size:12.8px"><br style=
=3D"font-size:12.8px"><span style=3D"font-size:12.8px">Thanks very much,</s=
pan><br style=3D"font-size:12.8px"><span style=3D"font-size:12.8px">Chris</=
span><br></div>

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