Omnidirectional reflector in a ternary metallo-dielectric structure

摘要

We discuss the complex dispersion relation of a one dimensional metallo-dielectric photonic crystal, produced by a dielectric photonic crystal with extremely thin metallic inserts with the same periodicity. We have carried out the analytical and numerical analysis. Also, we show a method to avoid the problem of solving the complicated system of transcendental equations of the dispersion relation that was proposed previously for us and we extended it to the oblique incidence, i.e., for calculating transversal electric and magnetic modes. Moreover, we demonstrated a metallic band gap not only at the bottom but also at high frequencies.