title: Ultrafast-pulse self-phase modulation and third-order dispersion in Si photonic wire-waveguides.
abstract: By propagating femtosecond pulses inside submicron-crosssection Si photonic-wire waveguides with anomalous dispersion, we demonstrate that the pulse-propagation dynamics is strongly influenced by the combined action of optical nonlinearity and up to third-order dispersion with minimal carrier effects. Because of strong light confinement, a nonlinear phase shift of a few pi due to self-phase modulation is observed at a pulse peak-power of just ~250 mW. We also observe soliton-emitted radiation, fully supported by theoretical analysis, from which we determine directly the third-order dispersion coefficient, beta(3) = -0.73 +/- 0.05 ps(3)/m at 1537 nm.
authors.forename: I-Wei
authors.initials: IW
authors.lastname: Hsieh
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Chen
authors.forename: Jerry I
authors.initials: JI
authors.lastname: Dadap
authors.forename: Nicolae C
authors.initials: NC
authors.lastname: Panoiu
authors.forename: Richard M
authors.initials: RM
authors.lastname: Osgood
authors.forename: Sharee J
authors.initials: SJ
authors.lastname: McNab
authors.forename: Yurii A
authors.initials: YA
authors.lastname: Vlasov