title: Nonlinear propagation in superstructure Bragg gratings.
abstract: The existence of solitary waves in superstructure Bragg gratings is experimentally demonstrated, confirming theoretical predictions. We observe nonlinear compression as a result of a combination of the negative dispersion of the grating and the nonlinear phase shift associated with the pulse intensity. We also demonstrate that, in a superstructure Bragg grating, the dispersion is continuously tunable from normal to anomalous, which allows us to manipulate the shape of the transmitted pulse.
authors.forename: B J
authors.initials: BJ
authors.lastname: Eggleton
authors.forename: C M
authors.initials: CM
authors.lastname: de Sterke
authors.forename: R E
authors.initials: RE
authors.lastname: Slusher