Frequency conversion dynamics of vector modulation instability in normal-dispersion high-birefringence fibers

被引：0
作者：
Xiankun Yao
Zhan-Ying Yang
Wen-Li Yang
机构：
[1] Northwest University,School of Physics
[2] Shaanxi Key Laboratory for Theoretical Physics Frontiers,Institute of Modern Physics
[3] Northwest University,undefined
来源：
Nonlinear Dynamics | 2021年 / 103卷
关键词：
Modulation instability; Birefringent fiber; Coupled nonlinear Schrödinger equation; Four-wave mixing;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We investigate the frequency conversion associated with the nonlinear stage of vector modulational instability in high-birefringence fibers with normal group-velocity dispersion. A complex heteroclinic structure of instability reveals all possible dynamic trajectories of frequency conversion. It is shown that different Fermi–Pasta–Ulam recurrent regimes are separated by Akhmediev breathers corresponding to a separatrix on the heteroclinic structure. We also demonstrate that the optimal frequency conversion unexpectedly occurs outside the parametric gain bandwidth when the input light is polarized close to 45° from a principal axis of the fiber, whereas the optimal conversion frequency gradually shifts into the gain region when the polarization direction of input light tilts toward the principal axis of the fiber.
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页码：1035 / 1041
页数：6
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