Re: defects for a waveguide slab PC
"Steven G. Johnson" <[email protected]>
| Newsgroups | gmane.comp.science.photonic-bands |
|---|---|
| Message-ID | <[email protected]> |
On Jun 23, 2009, at 2:59 PM, Juan Pablo Vasco wrote: > Im trying to find the band diagram for a slab PC with a line defect; > but a lot of bands of the light cone fall into the gap ¿is the > reason of this behavior the same that in the post: http://www.mail-archive.com/[email protected]/msg00237.html > ? > ok, how can i find in mpb software the defect band of the waveguide > without look the localization of the field? No, a line defect has a genuine band gap below the light cone and genuine localized modes, and MPB should work fine. (e.g. all of the examples for slab line defects in our book, http://ab-initio.mit.edu/book , were computed with MPB.) (I'm assuming that your line defect has the same periodicity as the slab. If it has a much longer periodicity, e.g. if you are trying to model a coupled-cavity waveguide, then the gap is destroyed by band folding and the modes are leaky; in this case you are probably better off with Meep.) Steven _______________________________________________ mpb-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss