On the modulation instability development in optical fiber systems |
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Authors: | D S Agafontsev |
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Institution: | 1.Lebedev Physical Institute,Russian Academy of Sciences,Moscow,Russia |
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Abstract: | Extensive numerical simulations were performed to investigate all stages of modulation instability development from the initial
pulse of pico-second duration in photonic crystal fiber: quasi-solitons and dispersive waves formation, their interaction
stage and the further propagation. Comparison between 4 different NLS-like systems was made: the classical NLS equation, NLS
system plus higher dispersion terms, NLS plus higher dispersion and self-steepening and also fully generalized NLS equation
with Raman scattering taken into account. For the latter case a mechanism of energy transfer from smaller quasi-solitons to
the bigger ones is proposed to explain the dramatical increase of rogue waves appearance frequency in comparison to the systems
when the Raman scattering is not taken into account. |
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Keywords: | |
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