Re: Interpretation of Hfield 1st and 2nd band with h5topng
"F.S.F. Brossard" <[email protected]>
| Newsgroups | gmane.comp.science.photonic-bands |
|---|---|
| Message-ID | <[email protected]> |
Hi Steven, of course! sorry, my mistake, we only get a true picture of where the mode energy lies with the x and y components of the E-field here (hence dpwr) but the information given by H is useful for mode coupling. Thanks! Fred. On Aug 24 2006, Steven G. Johnson wrote: >On Wed, 23 Aug 2006, F.S.F. Brossard wrote: >> Below is a simple test to view the z-component of the H field and >> magnetic energy density in a triangular lattice of air-holes. I have >> attached the pics for the first and second band. This looks a bit odd, >> should the field antinodes not be located in the dielectric for the >> first band? it almost looks like the opposite of what we would expect >> (first and second band). I am sure this must have been discussed >> elsewhere but couldn't find this particular topic. > >Looks right to me. Remember, the variational principle tells you that the >*electric* field energy tries to be concentrated in the high dielectric >for the lowest bands, not the *magnetic* field energy. > >_______________________________________________ >mpb-discuss mailing list >[email protected] >http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss > -- Frederic Brossard Hitachi Cambridge Laboratory Cavendish Laboratory J J Thomson Avenue Cambridge CB3 0HE