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Spatiotemporal instabilities in non-Kerr nonlinear complex parity-time symmetric structures

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Summary: Constant intensity solutions of the nonlinear Schroddinger equation incorporating terms like third order dispersion, self steepening, self frequency shift and PT symmetric potential were obtained. These solutions were used to analyze modulational instability in both anomalous and normal dispersion regimes, with linear stability results corroborated by numerical simulations. The study examined the effects of third order dispersion, self steepening, self frequency shift, and amplitude variation on modulational instability of the constant intensity states.
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