Non-reciprocity and topology in optics: one-way road for light via surface magnon polariton

Abstract

We show how non-reciprocity and topology are used to construct an optical one-way waveguide in the Voigt geometry. First, we present a traditional approach of the one-way waveguide of light using surface polaritons under a static magnetic field. Second, we explain a recent discovery of a topological approach using photonic crystals with the magneto-optical coupling. Third, we present a combination of the two approaches, toward a broadband one-way waveguide in the microwave range.     

Non-reciprocity and topology in optics: one-way road for light via surface magnon polariton

We show how non-reciprocity and topology are used to construct an optical one-way waveguide in the Voigt geometry. First, we present a traditional approach of the one-way waveguide of light using surface polaritons under a static magnetic field. Second, we explain a recent discovery of a topological approach using photonic crystals with the magneto-optical coupling. Third, we present a combination of the two approaches, toward a broadband one-way waveguide in the microwave range.     

On some optical properties of magnetic photonic crystals

The features of the eigen polarizations of magnetic photonic crystals for large values both of the parameter of magneto-optical activity and the depth of modulation are investigated. The case when the angle between the direction of the external static magnetic field and the normal to the boundary of the layer is zero is considered. The light transmission through the magnetic photonic crystal layer is solved by Ambartsumian's layer addition modified method. The influence of the depth of modulation, the parameter of magneto-optical activity, and the angle of incidence on the eigen polarizations is studied. A simple geometric method for determination of the Bragg frequencies and the widths of forbidden bands is proposed.     

边导模隔离器的设计和研究

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