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Rayleigh backscattering from the fundamental mode in step-index multimode optical fibers

机译:从阶梯索引多模光纤中的基本模式瑞利反向散射

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摘要

The Rayleigh backscattering produced by an incident fundamental mode in a multimode step-index optical fiber was analyzed using a recently developed diffraction technique. The complete set of backward propagating modes, both radial and azimuthal, was determined and regarded. For this type of fiber, normalized mode functions were constructed in an explicit form, thus providing a unified power scale to characterize the relationships between various excited modes. The dependencies of the mode excitation efficiencies on the technical parameters of the fiber and the frequency of the launched radiation were studied. A comparison of the mode excitation efficiencies was performed with those in the fiber with quadratic refractive index profiles. (C) 2017 Optical Society of America
机译:使用最近开发的衍射技术分析了由多模阶梯指数光纤中的入射基波产生的瑞利反向散射。 确定并考虑完整的向后传播模式,径向和方位角。 对于这种类型的光纤,归一化模式函数以明确的形式构造,从而提供统一的电力标度以表征各种激励模式之间的关系。 研究了对光纤技术参数的模式激励效率的依赖性和发射辐射的频率。 用具有二次折射率分布的纤维中的那些进行模式激发效率的比较。 (c)2017年光学学会

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  • 来源
    《Applied optics》 |2017年第2期|共11页
  • 作者单位

    St Petersburg State Univ 7-9 Univ Skaya Nab St Petersburg 199034 Russia;

    Peter Great St Petersburg Polytech Univ Dept Radiophys 29 Polytechnicheskaya Ul St Petersburg 195251 Russia;

    Schlumberger Fiber Opt Technol Ctr Unit7 Abbey Pk Ind Estate Southampton SO51 9DL Hants England;

    Peter Great St Petersburg Polytech Univ Dept Radiophys 29 Polytechnicheskaya Ul St Petersburg 195251 Russia;

    Peter Great St Petersburg Polytech Univ Dept Radiophys 29 Polytechnicheskaya Ul St Petersburg 195251 Russia;

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