Dear Steven and MPB's user,
I have a problem about MPB would like to discuss with you:
I would like to calculate the band structure of the PC slab: (have a three
layer). The first layer is the clad 1 (with refractive index n1, and thickness
0.2a); The second layer is the core (with refractive index n0, and thickness
0.1a); The third layer is the clad 2 (with refractive index n2, and thickness
0.3a). I define my structure as below: (n1 < n2 < n0)
(set! geometry
(list
(make block (material (make dielectric (epsilon eps1))) (center 0 0 -0.2)
(size 1 1 0.2))
(make block (material (make dielectric (epsilon eps0))) (center 0 0 -0.05)
(size 1 1 0.1))
(make block (material (make dielectric (epsilon eps2))) (center 0 0 0.15)
(size 1 1 0.3))
(make cylinder (material air) (center 0 0 -0.05) (radius r) (height 0.6))
))
It seems MPB does not support the asymmetric structure, because I check my
structure by using this command: h5topng -x (-y) ....The cross structure that I
get, is not correct!
Please let me know why it is?
Thanks,
Nils Jensen
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