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Design of modern dispersion-managed lightwave systems.

机译：现代色散管理光波系统的设计。

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摘要

Dispersion management has proven to be an important technique for designing lightwave communication systems as it can be used to lower the average dispersion of a fiber link even though the group-velocity dispersion is kept relatively large locally for suppressing four-wave mixing. The performance of modern dispersion-managed lightwave systems depends on a large number of factors. Gordon-Haus timing jitter, arising from the presence of amplified spontaneous emission noise, happens to be one of the major limiting factors for long-haul systems, especially at high bit rates exceeding 10 Gb/s. In this thesis, we analyze the role of distributed amplification in controlling timing jitter in dispersion-managed systems. We derive analytical expressions for the timing jitter at any position within the fiber link in the cases of ideal distributed and lumped amplifications and show the possibility of reducing timing jitter by up to 40% using Raman or erbium-based distributed amplification.; It has become apparent in recent years that the dispersion of an optical fiber, designed to have a fixed value, can vary over a considerable range because of unavoidable variations in the core diameter along the fiber length. Even though such axial variations are static, they can impact the system performance because of the nonlinear nature of the pulse propagation problem. Although dispersion fluctuations rarely impact a 10-Gb/s system, their role on the system performance must be considered for 40-Gb/s lightwave systems for which dispersion tolerance is relatively tight. In this thesis, we present the results of extensive numerical simulations performed to identify the impact of dispersion fluctuations on the performance of 40-Gb/s dispersion-managed lightwave systems, designed using either the chirped-return-to-zero or the soliton format and employing distributed Raman amplification.; We consider also the design of dispersion-managed soliton systems. We use the variational approach to derive approximate analytic expressions for the input pulse parameters and show the existence of a limiting bit rate, which depends only on the dispersion-map configuration. Finally, the design rules are proposed that allow the minimization of the intrachannel pulse interactions in a dispersion-managed soliton system.
机译：色散管理已被证明是设计光波通信系统的一项重要技术，因为即使将局部速度色散保持相对较大以抑制四波混频，色散管理也可用于降低光纤链路的平均色散。现代色散管理的光波系统的性能取决于许多因素。由于存在放大的自发发射噪声而引起的戈登-豪斯定时抖动恰好是长距离系统的主要限制因素之一，尤其是在超过10 Gb / s的高比特率下。本文分析了分布式放大在色散管理系统中控制时序抖动的作用。在理想的分布式和集中式放大的情况下，我们推导了光纤链路中任何位置的时序抖动的解析表达式，并显示了使用拉曼或基于distributed的分布式放大将时序抖动降低40％的可能性。近年来已变得显而易见的是，设计成具有固定值的光纤的色散可以在相当大的范围内变化，这是因为芯直径沿纤维长度不可避免地会发生变化。即使这样的轴向变化是静态的，由于脉冲传播问题的非线性性质，它们也会影响系统性能。尽管色散波动很少会影响10 Gb / s的系统，但对于色散容差相对严格的40 Gb / s光波系统，必须考虑其对系统性能的影响。在这篇论文中，我们提出了广泛的数值模拟结果，以识别色散波动对40 Gb / s色散管理的光波系统的性能的影响，该系统采用the归零或孤子格式设计并采用分布式拉曼放大。我们还考虑色散管理孤子系统的设计。我们使用变分方法来得出输入脉冲参数的近似解析表达式，并显示存在极限位速率，该位速率仅取决于色散图配置。最后，提出了允许在色散管理孤子系统中最小化通道内脉冲相互作用的设计规则。

著录项

  • 作者

    Poutrina, Ekaterina.;

  • 作者单位

    University of Rochester.;

  • 授予单位 University of Rochester.;
  • 学科 Physics Optics.
  • 学位 Ph.D.
  • 年度 2005
  • 页码 137 p.
  • 总页数 137
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 光学;
  • 关键词

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