title: Evolution of modes in a metal-coated nano-fiber.
abstract: We report on the evolution of modes in cylindrical metal/dielectric systems. The transition between surface plasmon polaritons and localized modes is documented in terms of the real and imaginary parts of the effective refractive index as a function of geometric and optical parameters. We show the evolution process of SPP and localized modes. New phenomena of coupling between SPP and core-like modes, and of mode gap and super-long surface plasmon polaritons are found and discussed. We conclude that both superluminal light and slow light can be solutions of metallically coated dielectric fibers.
authors.affiliation: Institute of Microelectronics, Agency for Science, Technology and Research, Singapore Science Park II, Singapore. songjf@ime.a-star.edu.sg
authors.forename: Junfeng
authors.initials: J
authors.lastname: Song
authors.forename: Remo Proietti
authors.initials: RP
authors.lastname: Zaccaria
authors.forename: Guancai
authors.initials: G
authors.lastname: Dong
authors.forename: Enzo
authors.initials: E
authors.lastname: Di Fabrizio
authors.forename: M B
authors.initials: MB
authors.lastname: Yu
authors.forename: G Q
authors.initials: GQ
authors.lastname: Lo
mesh_terms: D003198:Computer Simulation; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry*; D008956:Models, Chemical; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*