Patent ID: 9709736
Date: 2017-07-18
CPC Classifications: B82Y,G02B,G02F

Claim:
1. A right-angle waveguide based on a square-cylinder-type square-lattice photonic crystal and a single compensation scattering cylinder with high refractive index, characterized in that: said right-angle waveguide is built in a PhC formed from first dielectric cylinders with high refractive index arranged in a background dielectric with low refractive index according to a square-lattice; wherein said PhC, one row and one column of said first dielectric cylinders with high refractive index are removed to form said right-angle waveguide; a second dielectric cylinder with high refractive index is arranged at the corner of said right-angle waveguide; said second dielectric cylinder is the compensation scattering cylinder; and said first dielectric cylinders are square cylinders with high refractive index; wherein said second dielectric cylinder is an isosceles right triangle cylinder, an arch shaped cylinder, a square cylinder, a triangular cylinder, a polygonal cylinder of more than three sides, or a cylinder, of which the outline of the cross section is a smooth closed curve.