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Phys. Rev. Lett. 92, 223902 (2004) [4 pages]

Observation of Resonance Soliton Trapping due to a Photoinduced Gap in Wave Number

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G. Van Simaeys1, S. Coen1, M. Haelterman1, and S. Trillo2,3
1Service d’optique et d’acoustique, Université Libre de Bruxelles, 50 Avenue F. D. Roosevelt, CP 194/5, 1050 Brussels, Belgium
2Department of Engineering, University of Ferrara, Via Saragat 1, 44100 Ferrara, Italy
3INFM-RM3, Via della Vasca Navale 84, 00146 Roma, Italy

Received 16 July 2003; published 2 June 2004

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(Ω) 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.


©2004 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.92.223902
DOI: 10.1103/PhysRevLett.92.223902
PACS: 42.65.Tg, 03.50.De, 05.45.Yv, 42.65.Jx

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