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Experimental demonstration of the Fermi-Pasta-Ulam recurrence in a modulationally unstable optical wave
G Van Simaeys1, P Emplit, M Haelterman
1Service d'Optique et d'Acoustique, Université Libre de Bruxelles, 50 Avenue F. D. Roosevelt, CP 194/5, B-1050 Brussels, Belgium.
Physical Review Letters
|July 20, 2001
Abstract:
Through a detailed spectral analysis of the propagation of square-shaped laser pulses in optical fibers, we provide the experimental demonstration of the Fermi-Pasta-Ulam recurrence phenomenon in modulationally unstable optical waves ruled by the nonlinear Schrödinger equation.