Dark optical solitons near the zero-dispersion wavelength.
Propagation of a dark optical soliton is investigated in the neighborhood of the zero-group-dispersion wavelength. Analytical results are obtained in the small-amplitude limit when the soliton is described by the Korteweg-de Vries equation. It is predicted that dark solitons may exist near the zero-group-dispersion point, and the region is found where they are unstable and may be transformed into bright solitons on a pedestal.
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Kivshar