Nonlinear evolution of the locally induced modulational instability in fiber optics

Adrien Kraych, Pierre Suret, Gennady El, Stéphane Randoux

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64 Citations (Scopus)
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We report an optical fiber experiment in which we study the nonlinear stage of modulational instability of a plane wave in the presence of a localized perturbation. Using a recirculating fiber loop as the experimental platform, we show that the initial perturbation evolves into an expanding nonlinear oscillatory structure exhibiting some universal characteristics that agree with theoretical predictions based on integrability properties of the focusing nonlinear Schrödinger equation. Our experimental results demonstrate the persistence of the universal evolution scenario, even in the presence of small dissipation and noise in an experimental system that is not rigorously of an integrable nature.

Original languageEnglish
Article number054101
Number of pages6
JournalPhysical Review Letters
Issue number5
Early online date6 Feb 2019
Publication statusPublished - 6 Feb 2019


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