RIGHT-ANGLE WAVEGUIDE BASED ON CIRCULAR-HOLE-TYPE SQUARE-LATTICE PHOTONIC CRYSTAL AND DUAL COMPENSATION SCATTERING CYLINDERS WITH LOW REFRACTIVE INDEX
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Dec 31, 2016
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Sep 29, 2014
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A high-refractive-index double-compensation-scattering-cylinder right-angle waveguide of a hole-type square lattice photonic crystal, being a photonic crystal formed by arranging a first dielectric cylinder having a low refractive index in a background dielectric having a high refractive index in a square lattice; one row and one column of the first dielectric cylinders having a low refractive index are removed from the photonic crystal to form a right-angle waveguide; a second dielectric cylinder and a third dielectric cylinder having low refractive indexes are respectively arranged at two turns of the right-angle waveguide; and the second and third dielectric cylinders are compensation scattering cylinders, and are low-refractive-index cylinders or air holes, and the first dielectric cylinders are low-refractive-index cylinders or air holes. The right-angle waveguide has an extremely low reflectivity and an extremely high transmission rate, thus facilitating an integration of a large-scale light path.
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