T. Pertsch, U. Peschel, S. Nolte, A. Tunnermann, F. Lederer, J. Kobelke, K. Schuster, H. Bartelt
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Nonlinearity and disorder in two-dimensional fiber arrays
We experimentally observe diffusive wave propagation in disordered two-dimensional arrays of interacting optical fibers. A weak Kerr nonlinearity can cause an increased mobility, where strong nonlinearity leads to the formation of discrete solitons.