title: Near-zero dispersion, highly nonlinear lead-silicate W-type fiber for applications at 1.55 microm.
abstract: We report the design, fabrication and characterization of a lead-silicate glass highly nonlinear W-type fiber with a flattened and near-zero dispersion profile in the 1.55 microm region. The fiber was composed of three types of commercial lead silicate glasses. Effectively single-mode guidance was observed in the fiber at 1550 nm. The nonlinear coefficient and the propagation loss at this wavelength were measured to be 820 W(-1)km(-1) and 2.1 dB/m, respectively. Investigations of the Brillouin threshold revealed no evidence of stimulated Brillouin scattering for continuous wave signal powers up to 29 dBm in a 2m sample of the fiber. A broadband dispersion measurement confirmed the near-zero dispersion values and the flat dispersion profile around 1550 nm, in good agreement with our simulations. Efficient four-wave-mixing, tunable across the whole C-band, was demonstrated in a 2.2m length of the fiber.
authors: Optoelectronics Research Centre, University of Southampton, Southampton, SO17 1BJ, UK.
authors: Angela
authors: A
authors: Camerlingo
authors: Xian
authors: X
authors: Feng
authors: Francesco
authors: F
authors: Poletti
authors: Giorgio M
authors: GM
authors: Ponzo
authors: Francesca
authors: F
authors: Parmigiani
authors: Peter
authors: P
authors: Horak
authors: Marco N
authors: MN
authors: Petrovich
authors: Periklis
authors: P
authors: Petropoulos
authors: Wei H
authors: WH
authors: Loh
authors: David J
authors: DJ
authors: Richardson