Abstract
We demonstrate the first experimental investigation of the interaction between black and gray solitons in an optical fiber. The fiber length equals 8 soliton distances. The repulsive character of the interaction is observed during the walk-off of the gray soliton through the black one inside the finite-width background carrier pulse. Opposite cases of the gray soliton phase profile are studied, corresponding to gray pulses with a group velocity higher and smaller than that of the carrier pulse. Numerical simulations presented show good agreement with experimental data.
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