title: Ultrahigh nonlinear nanoshell plasmonic waveguide with total energy confinement.
abstract: Dielectric nonlinear waveguides have reached their maximum potential in achieving high nonlinearity due to the limitation of mode confinement beyond the diffraction limit. We theoretically demonstrate that a plasmonic waveguide consisted of a nonlinear subwavelength core coated by a metallic nanoshell can achieve ultrahigh nonlinearity and complete mode confinement. Our results show that the subwavelength nanoshell plasmonic waveguide can possess an ultrahigh Kerr nonlinearity up to 4.1 × 10(4) W(-1) m(-1) with nearly 100% of the mode energy residing inside the waveguide at λ = 1.55 µm. The optical properties are explored with detailed numerical simulations and are explained in terms of their dispersive properties.
authors: Centre for Micro-Photonics and CUDOS, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.
authors: Md M
authors: MM
authors: Hossain
authors: Mark D
authors: MD
authors: Turner
authors: Min
authors: M
authors: Gu
mesh_terms: D003198:Computer Simulation; D004735:Energy Transfer; D008027:Light; D008670:Metals / Q000737:chemistry*; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry*; D017711:Nonlinear Dynamics; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D008670:Metals