Self - collimation effect in hexagon-hole type photonic crystal slabs

This paper extends prior analysis of self - collimation effect in two dimensional photonic crystal structure patterned with a triangular lattice having hexagonal holes [1]. The equifrequency contours analysis is performed in order to determine the self - collimation effect frequency range for this structure. The routing of two self-collimated Gaussian beams travelling through a hexagonal photonic crystal, on the same optical layer is demonstrated. Using the unique advantage of allowing self-collimated beams to cross each other without coupling, one can devise structureless interconnects for photonic integrated circuits [2].