Wave interactions and wave-structure scattering in nonlinear patterned waveguides |
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Authors: | Yoav Linzon Boris A. Malomed Michael Zaezjev R. Morandotti Maite Volatier-Ravat Vincent Aimez Richard Ares Shimshon Bar-Ad |
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Affiliation: | 1. School of Physics and Astronomy, Faculty of Exact Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel;2. Universite’ du Quebec, Institute National de la Recherche Scientifique, Varennes, Quebec J3X 1S2, Canada;3. Department of Physical Electronics, Faculty of Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel;4. Centre de Recherche en Nanofabrication et en Nanocaracterisation, Universite de Sherbrooke, 2500 Boulevard Universite, Sherbrooke, J1K 2R1, Canada |
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Abstract: | The nonlinear interactions between discrete optical solitons that propagate in different regimes of diffraction, and the nonlinear scattering of dispersive waves by local optical potentials, were studied experimentally. It is well known in electromagnetism that when linear coherent waves meet they interfere without interactions. Linear waves also scatter through local optical structures without exchanging any power with guided and anti-guided modes of these structures. When a focusing Kerr nonlinearity is present, linearly inhibited phenomena, which break these rules, are shown to exist. Our studies were performed with Silica glass and semiconductor AlGaAs nonlinear planar modulated waveguides, excited by ultra-short pulses in the near infrared spectral regime. |
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Keywords: | Nonlinear optical waveguides Discrete solitons Nonlinear interactions Wave scattering Wave trapping |
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