Enlargement of omnidirectional total reflection frequency range in one-dimensional photonic crystals by using photonic heterostructures

Abstract
We show theoretically that the omnidirectional total reflection frequency range of a multilayerdielectric reflector can be substantially enlarged as desired by using photonicheterostructures. This photonicheterostructure consists of different one-dimensional (1D) photonic crystals. The constituent 1D photonic crystals have to be properly chosen such that their omnidirectional photonic band gaps of the adjacent photonic crystals overlap each other.