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FDM and DMT performance comparison in high capacity point-to-point fibre links for intra/inter-datacentre connections

机译:用于内部/内部数据中心连接的大容量点对点光纤链路中的FDM和DMT性能比较

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摘要

Frequency division multiplexing (FDM) is attractive to achieve high capacities in multiple access networks characterized by direct modulation and direct detection. In this paper we take into account point-to-point intra- and inter-datacenter connections to understand the performance of FDM operation compared with the ones achievable with standard multiple carrier modulation approach based on discrete multitone (DMT). DMT and FDM allow to match the non-uniform and bandwidth-limited response of the system under test, associated with the employment of low-cost directly-modulated sources, such as VCSELs with high-frequency chirp, and with fibre-propagation in presence of chromatic dispersion. While for very short distances typical of intra-datacentre communications, the huge number of DMT subcarriers permits to increase the transported capacity with respect to the FDM employment, in case of few tens-km reaches typical of inter-datacentre connections, the capabilities of FDM are more evident, providing system performance similar to the case of DMT application.
机译:频分复用(FDM)在以直接调制和直接检测为特征的多址网络中实现高容量具有吸引力。与基于离散多音(DMT)的标准多载波调制方法所能实现的FDM操作相比,在本文中我们考虑了点对点的数据中心内和数据中心之间的连接。 DMT和FDM允许匹配被测系统的非均匀和有限带宽的响应,这与使用低成本直接调制源(例如具有高频chi声的VCSEL和存在光纤时)相关联色散。尽管对于数据中心内部通信典型的非常短的距离,相对于FDM的使用,大量的DMT子载波允许增加传输容量,但在数据中心之间典型的几十公里到达的情况下,FDM的能力更明显的是,提供的系统性能类似于DMT应用程序的情况。

著录项

  • 来源
    《Optical fiber technology》 |2018年第5期|92-96|共5页
  • 作者

    Gatto A.; Parolari P.; Boffi P.;

  • 作者单位

    Politecn Milan, Dipartimento Elettron Informaz & Bioingn, Pzza Leonardo da Vinci 32, I-20133 Milan, Italy;

    Politecn Milan, Dipartimento Elettron Informaz & Bioingn, Pzza Leonardo da Vinci 32, I-20133 Milan, Italy;

    Politecn Milan, Dipartimento Elettron Informaz & Bioingn, Pzza Leonardo da Vinci 32, I-20133 Milan, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fibre optics communications; FDM; DMT; VCSEL;

    机译:光纤通信;FDM;DMT;VCSEL;

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