title: Observation of resonance soliton trapping due to a photoinduced gap in wave number.
abstract: We investigate the nonlinear propagation of two forward propagating modes coupled by a resonant traveling-wave grating, which is photoinduced by illuminating an optical fiber with a beat signal. This interaction, representative of systems whose dispersion relation K=K(Omega) exhibits a gap in momentum K, shows evidence of localization mediated by resonance solitons. The signature of a still (in the grating frame) soliton is grating-induced cancellation of modal group-velocity mismatch.
authors.affiliation: Service d'optique et d'acoustique, Université Libre de Bruxelles, 50 Avenue F. D. Roosevelt, CP 194/5, 1050 Brussels, Belgium.
authors.forename: G
authors.initials: G
authors.lastname: Van Simaeys
authors.forename: S
authors.initials: S
authors.lastname: Coen
authors.forename: M
authors.initials: M
authors.lastname: Haelterman
authors.forename: S
authors.initials: S
authors.lastname: Trillo