title: On the perfectly matched layer and the DB boundary condition.
abstract: In this paper, we consider a particular uniaxial material able to achieve the DB boundary condition. We show how, for particular transverse electromagnetic properties, this material behaves like a perfectly matched layer (PML). Moreover, we find that, with an approximation, the material becomes passive, i.e., loses the active part of the permittivity and of the permeability typical of a PML. In this case, the uniaxial medium becomes realizable as a particular absorbing metamaterial. We present simulations with both guided and free-space waves to show the absorbing behavior of the proposed material.
authors: Nicola
authors: N
authors: Tedeschi
authors: Fabrizio
authors: F
authors: Frezza
authors: Ari
authors: A
authors: Sihvola