title: Lenses on curved surfaces.
abstract: This Letter presents a theory that allows graded index lenses to be mapped onto arbitrary rotationally symmetric curved surfaces. Examples of the Luneburg and Maxwell fish-eye lens are given, for numerous surfaces, always resulting in isotropic permittivity requirements. The performance of these lenses is initially illustrated with full-wave simulations utilizing a waveguide structure. A transformation of the refractive index profiles is then performed to design surface-wave lenses, where the dielectric layer is not only isotropic but also homogenous, demonstrating the applicability and ease of fabrication.
authors: R C
authors: RC
authors: Mitchell-Thomas
authors: O
authors: O
authors: Quevedo-Teruel
authors: T M
authors: TM
authors: McManus
authors: S A R
authors: SA
authors: Horsley
authors: Y
authors: Y
authors: Hao