多模多芯光纤中模态色散的建模

I. Roudas
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引用次数: 1

摘要

强耦合多模多芯光纤中的模色散可以看作是单模光纤中偏振模色散的推广。由于这两种传输效应之间的相似性,传统的Jones和Stokes偏振模色散演算可以推广到模色散的情况。本文回顾并扩展了用模态色散向量表示Stokes空间中模态色散的理论框架。我们首次证明了模态色散向量可以写成代表主模态的Stokes向量的加权和,对应的模态群延迟作为系数。这构成了导致模态色散矢量重新解释的基本关系,并可用于推导其性质。
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Modeling of modal dispersion in multimode and multicore optical fibers
Modal dispersion in strongly-coupled multimode and multicore optical fibers can be viewed as a generalization of polarization-mode dispersion in single-mode fibers. Due to the similarities between these two transmission effects, the conventional Jones and Stokes calculus for polarization-mode dispersion can be extended to the case of modal dispersion. In this paper, we review and expand the theoretical framework used for the representation of modal dispersion in Stokes space by the modal dispersion vector. We show, for the first time, that the modal dispersion vector can be written as a weighted sum of the Stokes vectors representing the principal modes with the corresponding mode group delays as coefficients. This constitutes a fundamental relationship that leads to a reinterpretation of the modal dispersion vector and can be used to derive its properties.
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