Re: consultation

On Wed, 27 Jun 2007, Ryan Hao wrote:
>         Now I want to simulate a split defect structure using PWE 
> method.
>            But I have no idea how to choose the super cell.
>            Can you give my some suggestion?
>            The schematics for the structure is attached.

I suspect that you are using the wrong tool.  MPB computes eigenmodes, and 
only eigenmodes.  In the structure you depict, there are several 
waveguides, point defects, etcetera.   You might analyze the individual 
pieces of this structure by an eigenmode calculation (e.g. to get the band 
gap of the crystal, the dispersion relation of the waveguide, and the 
frequency of the point-defect mode), but not the whole thing together.

If you want, e.g. the transmission spectrum of this structure, you need to 
use some other tool (e.g. our Meep time-domain simulation package).

Regards,
Steven G. Johnson