Re: Waveguide in PC slabs (triangular lattice)

On Wed, 29 Nov 2006, Nils Jensen wrote:
>    I refer to the example "line defect waveguide in a 2D triangular 
> lattice of dielectric rods" in MPB's Tutorial. I used this command:
>                       (geometric-objects-lattice-duplicates geometry)
>    to duplicate the bulk crystal holes over the supercell.

The problem is not the geometric-objects-lattice-duplicates command.  The 
problem is that your supercell is the wrong size.  It should be  7 x 1 x 4 
or something like that, and instead you had 7 x 7 x 4.