=12, r=0.2a
r=0.3a
Red = TE (E-field parallel to plane of periodicity)Blue = TM (E-field perpendicular to plane of periodicity)
http://ab-initio.mit.edu/photons/tutorial/photonic-intro.pdf
Dielectric columns in air
negative positive
Dielectricband
Airband
TMD-field
TEH-field
negative positive
Dielectricband
Airband
Dielectric veins in air
FROM: Photonic Crystals by J.D. Joannopoulos, R.D. Meade, J.N. Winn (Princeton Univ. Press: NJ, 1995)
Assumes =11.4
0.46
0.45
0.14
Requires feature size of ~ 54 nm
Requires feature size of ~ 420 nm