title: Superluminal and stopped light due to mode coupling in confined hyperbolic metamaterial waveguides.
abstract: Anisotropic metamaterials with hyperbolic dispersion can be used to design waveguides with unusual properties. We show that, in contrast to planar waveguides, geometric confinement leads to coupling of ordinary (forward) and extraordinary (backward) modes and formation of hybrid waveguided modes, which near the crossing point may exhibit slow, stopped or superluminal behavior accompanied by very strong group velocity dispersion. These modes can be used for designing stopped-light nanolasers for nanophotonic applications and dispersion-facilitated signal reshaping in telecom applications.
authors.affiliation: Department of Physics, King's College London, Strand, London WC2R 2LS, United Kingdom.
authors.forename: Andres D
authors.initials: AD
authors.lastname: Neira
authors.affiliation: Department of Physics, King's College London, Strand, London WC2R 2LS, United Kingdom.
authors.forename: Gregory A
authors.initials: GA
authors.lastname: Wurtz
authors.affiliation: Department of Physics, King's College London, Strand, London WC2R 2LS, United Kingdom.
authors.forename: Anatoly V
authors.initials: AV
authors.lastname: Zayats