Experimental demonstration of bending and splitting of self-collimated beams in two-dimensional photonic crystals

Abstract

The authors have experimentally demonstrated the bending and splitting phenomena of self-collimated microwave beams in a two-dimensional square lattice photonic crystal composed of alumina rods. The bending and splitting were achieved by introducing a line defect in the photonic crystal. The power ratio of two split beams can be controlled by varying the radii of rods in the line defect. (c) 2007 American Institute of Physics.