Decay of dark solitons due to the stimulated Raman effect.
It is demonstrated analytically and numerically that dark solitons always disappear owing to the stimulated Raman effect. Instead of dark solitons, the stable propagation of optical kinks on the cw background in the region of the normal group-velocity dispersion is possible.
Institute for Low Temperature Physics and Engineering, 47 Lenin Avenue, 310164 Kharkov, USSR.
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Kivshar
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Afanasjev