title: Spatial mode-selective waveguide with hyperbolic cladding.
abstract: Hyperbolic metamaterials (HMMs) are anisotropic materials with a permittivity tensor that has both positive and negative eigenvalues. Here we report that by using a type II HMM as a cladding material, a waveguide that only supports higher-order modes can be achieved, while the lower-order modes become leaky and are absorbed in the HMM cladding. This counter-intuitive property can lead to novel application in optical communications and photonic integrated circuits. The loss in our HMM insulator-HMM (HIH) waveguide is smaller than that of similar guided modes in a metal-insulator-metal (MIM) waveguide.
authors.forename: Y
authors.initials: Y
authors.lastname: Tang
authors.forename: Z
authors.initials: Z
authors.lastname: Xi
authors.forename: M
authors.initials: M
authors.lastname: Xu
authors.forename: S
authors.initials: S
authors.lastname: Bäumer
authors.forename: A J L
authors.initials: AJ
authors.lastname: Adam
authors.forename: H P
authors.initials: HP
authors.lastname: Urbach