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.
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Frederic Brossard
Hitachi Cambridge Laboratory
Cavendish Laboratory
J J Thomson Avenue
Cambridge CB3 0HE
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