The electrodynamic properties of a planar two-dimensional Bragg resonator w
ith two-dimensional distributed feedback were studied. A high selectivity o
f the resonator with respect to the longitudinal and the transverse mode in
dices is demonstrated, the mode spectrum being significantly dependent on t
he surface relief pattern of the resonator places. The theoretical results
are confirmed by measurements under "cold" conditions. (C) 2000 MAIK "Nauka
/Interperiodica".