Dispersion of nonlinearity and modulation instability in subwavelength semiconductor waveguides

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Abstract

Tight confinement of light in subwavelength waveguides induces substantial dispersion of their nonlinear response. We demonstrate that this dispersion of nonlinearity can lead to the modulational instability in the regime of normal group velocity dispersion through the mechanism independent from higher order dispersions of linear waves. A simple phenomenological model describing this effect is the nonlinear Schrodinger equation with the intensity dependent group velocity dispersion.
Original languageEnglish
Pages (from-to)9345-9351
Number of pages7
JournalOptics Express
Volume19
Issue number10
DOIs
Publication statusPublished - 9 May 2011

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