Stokes Space Representation of Modal Dispersion
Stokes Space Representation of Modal Dispersion
复制标题
模态色散的斯托克斯空间表示
DOI：
10.1109/jphot.2017.2735403
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发表时间：
2017
影响因子：
2.4
通讯作者：
J. Kwapisz
中科院分区：
文献类型：
--
作者：
I. Roudas;J. Kwapisz
单模光纤中的偏振模色散可以被看作是多模和多芯光纤中的模式色散的特殊情况。利用这两种传输效应之间的相似性，模式色散可以通过修改传统的琼斯-斯托克斯形式主义以类似于偏振模色散的方式建模。本文利用模色散矢量，讨论了广义Stokes空间中模色散的几何表示。我们总结和统一的基本方程，封装的模式色散矢量的属性。我们证明了模式色散矢量可以表示为代表主模式的斯托克斯矢量的线性叠加。该展开的系数是对应的差模群延迟。这个简洁而优雅的表达式可以被认为是模色散矢量的简化定义，并可用于方便的分析计算。
Polarization-mode dispersion in single-mode fibers can be viewed as a special case of modal dispersion in multimode and multicore optical fibers. Exploiting the similarity between these two transmission effects, modal dispersion can be modeled in a way analogous to that of polarization-mode dispersion by modifying the conventional Jones–Stokes formalism. In this paper, we review the geometrical representation of modal dispersion in the generalized Stokes space by means of the modal dispersion vector. We summarize and unify the fundamental equations that encapsulate the properties of the modal dispersion vector. We prove that the modal dispersion vector can be expressed as a linear superposition of the Stokes vectors representing the principal modes. The coefficients of this expansion are the corresponding differential mode group delays. This concise and elegant expression can be considered as a simplified definition of the modal dispersion vector and can be used to facilitate analytical calculations.