论文标题
在光学通信中组合PMD PDL效应的数学描述以及如何最小化其诱导障碍
On the mathematical description of combined PMD PDL effects in optical communications and how their induced impairments can be minimized
论文作者
论文摘要
在本文中表明，光纤中的合并极化模式分散和依赖性损失（PMD-PDL效应或损害）的正确数学框架是扩展Lorentz组的不可约性的旋转器表示。组合的PMD-PDL效应显示出与作用于自旋1/2零质量颗粒的洛伦兹的变换正式相同。由于限制性洛伦兹组有两种不同的不可约合的旋转表示，因此在PMD-PDL效应的描述中还必须存在两种极化状态（SOP）。允许将一种转换为另一种转换为一种光相结合的光学过程。光相结合在Lorentz组表示理论中起着与时间反演算子相同的作用。提出了这些思想实用性的实用性且极为重要的例子，该技术大大降低了PMD-PDL诱导的障碍。该技术允许以非常简单明了的方式取消组合PMD-PDL损伤的PDL部分。
In this paper it is shown that the correct mathematical framework of combined polarization mode dispersion and polarization dependent losses (combined PMD-PDL effects or impairments) in optical fibers is the irreducible spinor representation of the extended Lorentz Group. Combined PMD-PDL effects are shown to be formally identical to Lorentz Transformations acting on spin 1/2 zero mass particles. Since there are two different irreducible spinor representations of the restricted Lorentz Group, there must also exist two kinds of states of polarizations (SOPs) that are relevant in the description of PMD-PDL effects. The optical process that allows to convert one kind into the other is identified as optical phase conjugation. Optical phase conjugation plays the same role as the time inversion operator in the Lorentz Group representation theory. A practical and extremely important example of utility of these ideas, a technique that significantly reduces the PMD-PDL induced impairments, is presented. This technique allows to cancel the PDL part of the combined PMD-PDL impairments in a very simple and straightforward way.
