title: Nonlinear propagation effects in antiresonant high-index inclusion photonic crystal fibers.
abstract: We experimentally and numerically investigate femtosecond-pulse propagation in a microstructured optical fiber consisting of a silica core surrounded by airholes that are filled with a high-index fluid. This fiber combines the resonant properties of hollow-core bandgap fibers and the high nonlinearity of index-guiding waveguides. A range of nonlinear optical effects can be observed, including soliton propagation, dispersive wave generation, and a Raman self-frequency shift. Tuning the center wavelength of the laser and varying the refractive index of the fluid lead to different propagation effects, mediated by the strongly wavelength-dependent group-velocity dispersion in these photonic bandgap confining structures.
authors.affiliation: Centre for Ultrahigh-bandwidth Devices for Optical Systems, School of Physics, University of Sydney, Sydney, NSW 2006, Australia.
authors.forename: A
authors.initials: A
authors.lastname: Fuerbach
authors.forename: P
authors.initials: P
authors.lastname: Steinvurzel
authors.forename: J A
authors.initials: JA
authors.lastname: Bolger
authors.forename: A
authors.initials: A
authors.lastname: Nulsen
authors.forename: B J
authors.initials: BJ
authors.lastname: Eggleton