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      W-shaped solitons generated from a weak modulation in the Sasa-Satsuma equation

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          Abstract

          We revisit on rational solution of Sasa-Satsuma equation, which can be used to describe evolution of optical field in a nonlinear fiber with some high-order effects. We find a striking dynamical process which involves both modulational instability and modulational stability regimes, in contrast to the rogue waves and W-shaped soliton reported before which involves modulational instability and stability respectively. It is demonstrated that stable W-shaped solitons can be generated from a weak modulation signal on continuous wave background. This provides a possible way to obtain stable high-intensity pulse from low-intensity continuous wave background.

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          Author and article information

          Journal
          2015-05-07
          Article
          10.1103/PhysRevE.93.032215
          1505.01909
          6efcde07-a44e-4f09-a45d-402d14a9adb3

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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          Phys. Rev. E 93, 032215 (2016)
          nlin.PS nlin.SI

          Nonlinear & Complex systems
          Nonlinear & Complex systems

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