Properties of plasmon-polariton modes in one-dimensional photonic superlattices made of Rudin-Shapiro bases

Theoretical investigations on the features of the plasmon-polariton frequency spectrum in one-dimensional photonic superlattices with Rudin-Shapiro dielectric layered unit cell are preformed. The plasmon polariton dispersion relations as well as the dependence on the angle of incidence of the Bragg and plasmon-polariton photonic bandgaps are reported. Results show that plasmon-polariton modes are robust even in the presence of rather large absorption. The outcome of the study shows that the reduced plasmon-polariton dispersion relation obtained within a Drude-like dielectric model points at a multifractal character under lossless conditions.