Hi Yingjun you can see by visualizing the mode image
Onder > Send mpb-discuss mailing list submissions to > mpb-discuss@ab-initio.mit.edu > > To subscribe or unsubscribe via the World Wide Web, visit > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss > or, via email, send a message with subject or body 'help' to > mpb-discuss-requ...@ab-initio.mit.edu > > You can reach the person managing the list at > mpb-discuss-ow...@ab-initio.mit.edu > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of mpb-discuss digest..." > > > Today's Topics: > > 1. How to distinguish between the guided mode and folded mode, > in a big supercell? (Yingjun YL) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 09 Jan 2013 15:14:56 +0330 > From: Yingjun YL <yingjun.y...@gmail.com> > To: mpb-discuss@ab-initio.mit.edu > Subject: [MPB-discuss] How to distinguish between the guided mode and > folded mode, in a big supercell? > Message-ID: <50ed5838.7040...@gmail.com> > Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" > > Dear Prof. and MPB users > > For simulating coupled cavities in photonic crystal slab, I have to > choose a big supercell (e.g. 5a * 15a in x and y direction respectively). > > In order to assure the correctness of the ctl file and simulation, I > simulate a photonic crystal waveguide by removing a row of holes in > trangular lattice of holes in PC. When I use 1a*15a supercell, I can see > clearly the Band Gap and guided mode in the gap. But when I use the 5a * > 15a supercell, several modes folded in band gap. > > How can I recognize the guided mode? > > Seems, my question is a basic question in PBG and photonic crystal, but > if any of the respected MPB user can help, it will be highly appreciated. > > Thanks > > Yingjun YL > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://ab-initio.mit.edu/pipermail/mpb-discuss/attachments/20130109/efeb7c53/attachment-0001.html> > > ------------------------------ > > _______________________________________________ > mpb-discuss mailing list > mpb-discuss@ab-initio.mit.edu > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss > > End of mpb-discuss Digest, Vol 82, Issue 3 > ****************************************** > Pamukkale Üniversitesi Mühendislik Fakültesi Elektrik-Elektronik Müh. Böl. Kınıklı-Denizli Tel: 0258 2963213 _______________________________________________ mpb-discuss mailing list mpb-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss
