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Abstract: We study a waveguide array with an embedded nonlinear saturable impurity. Wesolve the impurity problem in closed form and find the nonlinear localizedmodes. Next, we consider the scattering of a small-amplitude plane wave by anonlinear impurity mode, and discover regions in parameter space wheretransmission is fully suppressed. We relate these findings with Fano resonancesand propose this setup as a mean to control the transport of light across thearray.



Author: Uta Naether, Daniel E. Rivas, Manuel A. Larenas, Mario I. Molina, Rodrigo A. Vicencio

Source: https://arxiv.org/







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