Shock wave generation triggered by a weak background in optical fibers
Résumé
We experimentally report the observation of dispersive shock waves from a short pulse superimposed onto a small continuous wave background in optical fibers. We show that the background allows to strongly enhance the extension and contrast of the oscillatory wave train inherent to the dispersive shock. More than 7 periods of oscillations with a high contrast are observed experimentally and confirmed with numerical simulations. The dynamics of the process is simply explained from spectro-temporal representations.
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