Coupled Topological Surface Modes in Gyrotropic Structures: Green's Function Analysis

  title={Coupled Topological Surface Modes in Gyrotropic Structures: Green's Function Analysis},
  author={Seyyed Ali Hassani Gangaraj and Francesco Monticone},
  journal={IEEE Antennas and Wireless Propagation Letters},
At a transition in a wave-guiding structure, part of the incident energy is transmitted and part of the energy is reflected. When the waveguide has nontrivial topological properties, however, the transition may occur with no backscattering and with unusual modal coupling/transformations. Within this context, we discuss the response of a nonreciprocal topological structure composed of two nearby interfaces between oppositely biased gyrotropic media and an isotropic medium, which support… 

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