Scientific Results

Optical solitons induced by cross-phase modulation

Year: 1988

Authors: Trillo S., Wabnitz S., Wright E.M., Stegeman G.I.

Autors Affiliation: Fondazione Ugo Bordoni, Italy

Abstract: We investigated the nonlinear propagation in an optical fiber of two light beams of different frequency, opposite sign of GVD and comparable intensity. We found that cross-phase modulation may have a profound influence on the evolution of short pulses. Specifically, a bright soliton can propagate even in the otherwise forbidden normal dispersion regime, as long as it is coupled to a dark pulse in the anomalous dispersion regime. Numerical investigations have shown that this configuration can be destabilized by modulational instabilities after a relatively long distance. Conversely, cross-phase modulation may lead to the formation of a stable and compressed soliton in the anomalous dispersion regime when two short \’brigth\’ pulses are injected into the fiber.

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KeyWords: Mathematical Techniques–Numerical Analysis; Optical Fibers; Optics–Nonlinear, Cross Phase Modulation; Optical Solitons, Optical Communication
DOI: 10000000000

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