Modulational instability of dark solitons in three wave resonant interaction |
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| Authors: | Matteo Conforti Fabio BaronioAntonio Degasperis |
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| Institution: | a Consorzio Interuniversitario per le Scienze Fisiche della Materia, Università di Brescia, Via Branze 38, 25123 Brescia, Italyb Dipartimento di Fisica, and Istituto Nazionale di Fisica Nucleare, Università di Roma “La Sapienza”, P.le A. Moro 2, 00185 Roma, Italy |
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| Abstract: | We study the propagation of velocity-locked dark triplet solitons in the three wave resonant interaction model. The modulational instability of the plane wave background where the solitons sit prevents the long range propagation. However even a small second order dispersion proves to greatly reduce, or suppress, the modulational instability gain, allowing for effective stable soliton propagation. |
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| Keywords: | Three wave resonant interaction Dark solitons Stability Nonlinear optics |
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