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 _______________________________________________ mpb-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss
