title: Guiding electromagnetic waves around sharp corners: topologically protected photonic transport in metawaveguides.
abstract: The wave nature of radiation prevents its reflections-free propagation around sharp corners. We demonstrate that a simple photonic structure based on a periodic array of metallic cylinders attached to one of the two confining metal plates can emulate spin-orbit interaction through bianisotropy. Such a metawaveguide behaves as a photonic topological insulator with complete topological band gap. An interface between two such structures with opposite signs of the bianisotropy supports topologically protected surface waves, which can be guided without reflections along sharp bends of the interface.
authors: Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA.
authors: Tzuhsuan
authors: T
authors: Ma
authors: Department of Physics, Queens College of The City University of New York, Queens, New York 11367, USA.|The Graduate Center of The City University of New York, New York, New York 10016, USA.
authors: Alexander B
authors: AB
authors: Khanikaev
authors: Department of Electrical Engineering, The University of Texas at Austin, Austin, Texas 78712, USA.
authors: S Hossein
authors: SH
authors: Mousavi
authors: Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA.
authors: Gennady
authors: G
authors: Shvets