title: Efficient self-phase modulation in low loss, high index doped silica glass integrated waveguides.
abstract: We demonstrate efficient self phase modulation, as well as negligible nonlinear absorption, in low loss (<0.06 dB/cm), high index silica glass-based waveguides. Using approximately 1 ps pulses near 1560 nm we achieve a 1.5pi nonlinear phase shift in an integrated 45 cm long spiral waveguide with <60 W of peak input power, corresponding to a large nonlinearity (gamma) of 220 W(-1)km(-1). Further, we observe negligible nonlinear absorption for input intensities > 25 GW/cm(2). The high nonlinearity and low linear and nonlinear losses of these waveguides make them promising for nonlinear all-optical signal processing applications.
authors.affiliation: INRS-EMT, 1650 Boulevard Lionel Boulet, Varennes, Québec, Canada.
authors.forename: David
authors.initials: D
authors.lastname: Duchesne
authors.forename: Marcello
authors.initials: M
authors.lastname: Ferrera
authors.forename: Luca
authors.initials: L
authors.lastname: Razzari
authors.forename: Roberto
authors.initials: R
authors.lastname: Morandotti
authors.forename: Brent E
authors.initials: BE
authors.lastname: Little
authors.forename: Sai T
authors.initials: ST
authors.lastname: Chu
authors.forename: David J
authors.initials: DJ
authors.lastname: Moss