Patent ID: 6944384
Filing Date: 2005-09-13
Classification: B82Y,G02B

Abstract:
1. A photonic crystal waveguide for coupling with optic devices having positions of guided modes defined within a bandgap comprising: a planar photonic crystal slab in which an array of holes with periodic spacing is defined; and a waveguide defined by a line defect defined the array of holes in said slab, said line defect being created by a geometric perturbation of at least a first set of holes in the array with respect to a second set of holes in the array by a displacement of the first and second set of holes with respect to each other by an amount unequal to the periodic spacing of holes in the array to create at least one guided mode of light propagation in said waveguide so that the positions of the guided modes are controlled within the bandgap where said predetermined direction is the ΓX direction in said slab, said waveguide being defined as a type 1 waveguide or where said predetermined direction is the ΓJ direction in said slab, said waveguide being defined as a type 2 waveguide.