Nonlinearity and Disorder in Fiber Arrays
Thomas PertschFriedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, GermanyUlf PeschelFriedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, GermanyJens KobelkeFriedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, GermanyKay SchusterFriedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, GermanyHartmut BarteltFriedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, GermanyStefan NolteFriedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, GermanyAndreas TünnermannFriedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, GermanyF. LedererFriedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany
2004en
ABI
Abstract
We experimentally investigate light propagation in a disordered two-dimensional array of mutually coupled optical fibers. In the linear case light either spreads in a diffusive manner or localizes at a few sites. For high excitation power diffusive spreading is arrested by the focusing nonlinearity, i.e., forming a discrete soliton. By contrast, fields, which are localized in the linear regime, can experience both spreading and contraction caused by the nonlinearity.
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Cited by 30 references