Patent ID: 7224862
Filing Date: 2007-05-29
Classification: B82Y,G02B

Abstract:
1. A two-dimensional photonic crystal optical multiplexer/demultiplexer using boundary reflection, comprising: a) a slab-shaped body; b) plural modified refractive index areas arranged periodically in the body, each having a refractive index different from that of the body; c) a waveguide formed by creating defects of the modified refractive index areas in a linear arrangement, the end of which is located on an end of the body; d) a point-like defect formed by creating a defect of modified refractive index area or areas in the vicinity of the waveguide; and e) a first reflecting section provided at an end of the waveguide, for reflecting light having wavelength equal to the resonant wavelength of the point-like defect by connecting another two-dimensional photonic crystal not transmitting light with the wavelength to the end of the body.