Wm. Robertson et al., MEASUREMENT OF PHOTONIC BAND-STRUCTURE IN A 2-DIMENSIONAL PERIODIC DIELECTRIC ARRAY, Physical review letters, 68(13), 1992, pp. 2023-2026
The photonic band structure in a two-dimensional dielectric array is i
nvestigated using the coherent microwave transient spectroscopy (COMIT
S) technique. The array consists of alumina-ceramic rods arranged in a
regular square lattice. The dispersion relation for electromagnetic w
aves in this photonic crystal is determined directly using the phase s
ensitivity of COMITS. The experimental results are compared to theoret
ical predictions obtained using the plane-wave expansion technique. Co
nfigurations with the electric field parallel and perpendicular to the
axis of the rods are investigated.