Patent ID: 7406221
Filing Date: 2008-07-29
Classification: B82Y,G02B

Abstract:
1. A two-dimensional photonic crystal multiplexer/demultiplexer, comprising: a) a slab-shaped body; b) a plurality of areas arranged in a lattice pattern with a predetermined cycle within the body, where a refractive index of the areas differs from that of the body; c) a first optical input/output section consisting of a waveguide formed in the body, where the waveguide is made of a linear defect of modified refractive index areas; d) a second optical input/output section formed in the body; and e) two point-like defect resonators composed of point-like defects having substantially the same resonance wavelength and arranged in series between the first and second optical input/output sections, each point-like defect consisting of a point-like region devoid of the modified refractive index areas, wherein a value of a coupling ratio defined as μ