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Phys Rev Lett. 2004 Jun 4;92(22):223902. Epub 2004 Jun 2.

Observation of resonance soliton trapping due to a photoinduced gap in wave number.

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  • 1Service d'optique et d'acoustique, Universit√© Libre de Bruxelles, 50 Avenue F. D. Roosevelt, CP 194/5, 1050 Brussels, Belgium.


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.

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