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

View Article: PubMed Central - PubMed

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.

No MeSH data available.


The geometry under consideration. The magnetic field is applied in the lower part.
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Figure 1: The geometry under consideration. The magnetic field is applied in the lower part.

Mentions: In this section, we consider a flat interface between magnetic and non-magnetic media shown in figure 1 as a system without the TRS and SIS. For simplicity, we consider light propagation in the xy plane, and a static magnetic field is applied in the z direction. Obviously, the parity symmetry () is broken. The parity symmetry is also broken by the magnetic field. The parity symmetry is preserved irrespective of the magnetic field. As a result, the SIS is broken.


Non-reciprocity and topology in optics: one-way road for light via surface magnon polariton
The geometry under consideration. The magnetic field is applied in the lower part.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5036484&req=5

Figure 1: The geometry under consideration. The magnetic field is applied in the lower part.
Mentions: In this section, we consider a flat interface between magnetic and non-magnetic media shown in figure 1 as a system without the TRS and SIS. For simplicity, we consider light propagation in the xy plane, and a static magnetic field is applied in the z direction. Obviously, the parity symmetry () is broken. The parity symmetry is also broken by the magnetic field. The parity symmetry is preserved irrespective of the magnetic field. As a result, the SIS is broken.

View Article: PubMed Central - PubMed

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.

No MeSH data available.