Band Gap Extension in a One-Dimensional Ternary Metal-Dielectric Photonic Crystal

摘要: Comparing with an all-dielectric binary photonic crystal, we show, in this work, that the band gap ternary metal- dielectric crystal can be signiflcantly enlarged. First, enlargement due to addition of metallic fllm is examined case normal incidence. Next, oblique incidence, a wider omnidirectional obtained such metal-dielectric crystal. All theoretical analyses are made based on transfer matrix method together Drude model metals.