In this example, we consider a membrane structure of thickness 200 nm and refractive index =3.4. A hexagonal lattice of holes with radius = 130 nm have been etched into the layer. The lattice period is 500 nm.
In this case, we use symmetric boundary conditions to reduce the computational volume and to consider only TE-like photonic crystal modes in the slab.
To begin, load the demo file Planar3D_hex.fsp. The simulation setup very much like the rectangular lattice planar example, but with a number changes related to the hexagonal lattice. See the triangular, FCC, BCC photonic crystal bandstructure example for more information on simulating Hexagonal / Triangular lattices.
To run the three parameter sweeps: Gamma-M, M-K, K-Gamma, and to plot the results, run the Planar3D_hex.lsf script file.