Anti-dark and Mexican-hat solitons in the Sasa-Satsuma equation on the continuous wave background
Anti-dark and Mexican-hat solitons in the Sasa-Satsuma equation on the continuous wave background
复制标题
连续波背景Sasa-Satsuma方程中的反暗孤子和墨西哥帽孤子
DOI:
10.1209/0295-5075/109/30006
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发表时间:
2014-08
期刊:
影响因子:
--
通讯作者:
Lu Li
中科院分区:
文献类型:
--
作者:
Tao Xu;Min Li;Lu Li
In this letter, via the Darboux transformation method we construct new analytic soliton solutions for the Sasa-Satsuma equation which describes the femtosecond pulses propagation in a monomode fiber. We reveal that two different types of femtosecond solitons, i.e., the anti-dark (AD) and Mexican-hat (MH) solitons, can form on a continuous wave (CW) background, and numerically study their stability under small initial perturbations. Different from the common bright and dark solitons, the AD and MH solitons can exhibit both the resonant and elastic interactions, as well as various partially/completely inelastic interactions which are composed of such two fundamental interactions. In addition, we find that the energy exchange between some interacting soliton and the CW background may lead to one AD soliton changing into an MH one, or one MH soliton into an AD one.
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DOI:
--
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