TWO-DIMENSIONAL SQUARE LATTICE PHOTONIC CRYSTAL BASED ON ROTATED HOLLOW SQUARE RODS

摘要

The present invention discloses a 2D square-lattice PhC based on rotated hollow square rods, comprising a high-refractive-index dielectric rod and a low-refractive-index background dielectric rod; the PhC is formed by unit cells arranged according to square-lattices; the lattice constant of the square-lattice PhC is a; the unit cell of the square-lattice PhC includes a high-refractive-index rotated hollow square rod and a background dielectric; the outer contour of the hollow square rod is the first high-refractive-index rotated hollow square rod with the rotated angle α of 45° to 65° and the side length b of 0.6a to 0.75a, and a is the lattice constant of the square-lattice PhC; the cross section of the hollow part of the hollow square rod is a second high-refractive-index rotated hollow square rod with the rotated angle β of 25° to 50° and the side length c of 0.33a to 0.50a.