Patent ID: 7012946

Claim:
A photonic crystal-based resonant cavity, comprising: a first dielectric substance having a first dielectric permittivity; a plurality of second dielectric substances each having a second dielectric permittivity, the plurality of second dielectric substances being arranged in a first periodic structure with respect to at least one or more directions on a plane formed of the first dielectric substance; a plurality of third dielectric substances each having a third dielectric permittivity, the plurality of third dielectric substances being arranged in a second periodic structure with respect to at least one or more directions on the plane formed of the first dielectric substance, and being disposed in unit cells formed by the plurality of second dielectric substances so as to be arranged in a third periodic structure together with the plurality of second dielectric substances; and one or more local defects formed to disrupt either the first periodic structure formed by the second dielectric substances or the second periodic structure formed by the third dielectric substances.