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首页> 外文学位 >Ultra high data-rate optical transmission networks Part 1: Design of an optical system testbed for ultra high speed long haul transmission Part 2: Analysis and Reduction of Polarization Dependent Penalty in Phase Shift keying Demodulators.
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Ultra high data-rate optical transmission networks Part 1: Design of an optical system testbed for ultra high speed long haul transmission Part 2: Analysis and Reduction of Polarization Dependent Penalty in Phase Shift keying Demodulators.

机译：超高数据速率光传输网络第1部分：用于超高速长距离传输的光学系统测试平台的设计第2部分：相移键控解调器中与偏振有关的惩罚的分析和减少。

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摘要

The thesis consists of two different topics: In part 1, the design of an optical system testbed for long haul transmission using a re-circulating loop, is presented. The testbed operates at 40 Gb/s, it simulates an 1800 km link, with optical amplifiers every 80 km, and 16-32 DWDM channels. The theoretical elements involved in the testbed design are reviewed. The optical components are described and selected. The optical system design parameters are presented as well as design targets and optimization parameters. The final implementation is presented and propagation simulations are performed with RZ/NRZ DPSK, QPSK modulation formats to demonstrate the testbed functionality. In part 2 of the thesis, The BER penalty due to PDf in a DPSK demodulator is analyzed and its effect mitigated. A readily available technique is developed that allows measuring the individual contributions of PDf and PDL on BER and calibrate the demodulator in order to reduce the effective PDf by a factor of two which represents an almost 40% reduction in BER penalty due to PDf. The BER penalty due to PDf is measured for 10- vs. 40-GHz, RZ vs. NRZ DPSK demodulators. Finally, PDf mitigation is demonstrated using a PDL emulator, allowing a 75% reduction in polarization sensitivity.
机译：本文由两个不同的主题组成：在第1部分中，提出了使用循环环路进行长距离传输的光学系统测试平台的设计。该测试平台以40 Gb / s的速度运行，可模拟1800 km链路，每80 km具有光放大器，以及16-32 DWDM通道。审查了试验台设计中涉及的理论要素。描述并选择了光学组件。介绍了光学系统的设计参数以及设计目标和优化参数。介绍了最终的实现方式，并使用RZ / NRZ DPSK，QPSK调制格式执行了传播仿真，以演示测试平台的功能。在论文的第2部分中，分析了DPSK解调器中由PDf引起的BER损失并减轻了其影响。开发了一种容易获得的技术，该技术允许测量PDf和PDL对BER的单独贡献并校准解调器，以将有效PDf减小2倍，这表示归因于PDf的BER损失减少了近40％。对于10 GHz与40 GHz的Rz与NRZ DPSK解调器，测量了由于PDf引起的BER损失。最后，使用PDL仿真器演示了PDf缓解技术，可使偏振灵敏度降低75％。

著录项

  • 作者

    Cotruta, Dragos.;

  • 作者单位

    McGill University (Canada).;

  • 授予单位 McGill University (Canada).;
  • 学科 Engineering Electronics and Electrical.
  • 学位 M.Eng.
  • 年度 2011
  • 页码 103 p.
  • 总页数 103
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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