The nonlinear propagation of cylindrical vector beams in an optical fiber

•The VFE-BPM has been used to simulate the nonlinear evolution of CVBs.•The CVBs tend to break up into more filaments with higher input power.•The polarization of each filaments is basically linear.•Stability analysis by the approximate analytic stability theory. We simulate the evolution of cylindr...

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Bibliographic Details
Published in:Optics and laser technology 2020-10, Vol.130, p.106336, Article 106336
Main Authors: Dai, Chuansheng, Zhang, Yimin, Tao, Runxia, Lin, Jiaqiang, Yao, Peijun, Xu, Lixin, Gu, Chun, Zhan, Qiwen
Format: Article
Language:English
Subjects:
Beams (radiation)
Computer simulation
Cylindrical vector beam
Finite element method
Full-vector beam propagation method
Kerr nonlinear
Mathematical analysis
Optical fibers
Propagation
Qualitative analysis
Spatial soliton
Stability analysis
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Summary:•The VFE-BPM has been used to simulate the nonlinear evolution of CVBs.•The CVBs tend to break up into more filaments with higher input power.•The polarization of each filaments is basically linear.•Stability analysis by the approximate analytic stability theory. We simulate the evolution of cylindrical vector beams (CVBs) in a Kerr nonlinear medium by the full-vector finite-element beam propagation method (VFE-BPM). This beams show poor transverse stability which contrasts with the strong transverse stability of fundamental modes. The approximate analytic theory has been used to qualitative analyze the variations of the numerically calculated instability growth rates. We present a reasonable concentric circle model to avoid the influence of triangular grids during simulation.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2020.106336