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The effects of raman scattering on modulation instabilities in two-core optical fibers

机译：拉曼散射对两芯光纤中调制稳定性的影响

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摘要

We systematically explore the effects of Raman scattering (RS) on modulation instabilities (MIs) in nonlinear two-core optical fibers (TCFs) with the symmetric and antisymmetric continuous wave (CW) states. The main contribution of this paper is that the analytical gain spectra with RS effects are given explicitly for both anomalous and normal dispersion regimes. Our results show that the MI spectra with RS effects can be significantly changed. First of all, MI arises for any total power in both normal and anomalous dispersion regimes. Secondly, MI gain can be significantly enhanced especially at large values of perturbation frequencies. In addition, the modulation frequency generating MI expands from the finite frequency domain without RS effects to the infinite frequency domain. The MI analysis is finally verified numerically with wave propagation method.
机译：我们系统地探讨了拉曼散射（RS）对对称和反对称连续波（CW）状态的非线性两核光纤（TCF）中的调制稳定性（MIS）的影响。 本文的主要贡献是，具有RS效应的分析增益光谱是明确的，用于异常和正常的分散制度。 我们的结果表明，具有RS效应的MI光谱可以显着改变。 首先，MI在正常和异常的分散制度中出现任何总功率。 其次，可以显着提高MI增益，尤其是在扰动频率的大值中。 另外，调制频率生成MI从有限频域扩展，没有RS效应到无限频域。 MI分析最终用波传播方法在数值上进行验证。

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  • 来源
    《Optical and quantum electronics》 |2021年第5期|231.1-231.18|共18页
  • 作者

    Tingting Sun; Jinhua Li; Shixin Pei; YunyunChen; Zhaolou Cao; Fenglin Xian;

  • 作者单位

    School of Physics and Optoelectronic Engineering Nanjing University of Information Science and Technology Nanjing 210044 China;

    School of Physics and Optoelectronic Engineering Nanjing University of Information Science and Technology Nanjing 210044 China;

    School of Physics and Optoelectronic Engineering Nanjing University of Information Science and Technology Nanjing 210044 China;

    School of Physics and Optoelectronic Engineering Nanjing University of Information Science and Technology Nanjing 210044 China;

    School of Physics and Optoelectronic Engineering Nanjing University of Information Science and Technology Nanjing 210044 China;

    School of Physics and Optoelectronic Engineering Nanjing University of Information Science and Technology Nanjing 210044 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Raman scattering; Modulation instability; Two-core optical fibers;

    机译：拉曼散射;调制不稳定;双核光纤;

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