INTERMODE INTERACTIONS OF DARK SOLITARY WAVES

The intermode interaction of position-mismatched dark solitary waves w as studied numerically in the frame of coupled nonlinear Schrodinger e quations. In opposition to the case of bright solitons, a bound state was not established even though an attractive interaction between the modes induced an oscillating motion. However, a dynamic soliton was fo und to be generated when the strength of the cross-phase modulation wa s equal to that of the self-phase modulation, Modal analysis showed th at the dynamic soliton was composed of bright and dark solitary waves.