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Flexible-rate optical packet generation/detection and label swapping for optical label switching networks

机译：光标签交换网络的灵活速率光分组生成/检测和标签交换

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摘要

In recent years, optical label switching (OLS) gains lots of attentions due to its intrinsic advantages to implement protocol, bit-rate, granularity and data format transparency packet switching. In this paper, we propose a novel scheme to realize flexible-rate optical packet switching for OLS networks. At the transmitter node, flexible-rate packet is generated by parallel modulating different combinations of optical carriers generated from the optical multi-carrier generator (OMCG), among which the low-speed optical label occupies one carrier. At the switching node, label is extracted and re-generated in label processing unit (LPU). The payloads are switched based on routing information and new label is added after switching. At the receiver node, another OMCG serves as local oscillators (LOs) for optical payloads coherent detection. The proposed scheme offers good flexibility for dynamic optical packet switching by adjusting the payload bandwidth and could also effectively reduce the number of lasers, modulators and receivers for packet generation/detection. We present proof-of-concept demonstrations of flexible-rate packet generation/detection and label swapping in 12.5 GHz grid. The influence of crosstalk for cascaded label swapping is also investigated. (C) 2017 Elsevier Inc. All rights reserved.
机译：近年来，光学标签交换（OLS）由于其在实现协议，比特率，粒度和数据格式透明性分组交换方面的固有优势而备受关注。在本文中，我们提出了一种新的方案来实现OLS网络的灵活速率光分组交换。在发射机节点，通过并行调制从光学多载波发生器（OMCG）生成的光学载波的不同组合来生成灵活速率数据包，其中低速光学标签占用一个载波。在交换节点处，标签被提取并在标签处理单元（LPU）中重新生成。有效负载根据路由信息进行切换，并在切换后添加新标签。在接收器节点，另一个OMCG用作本地振荡器（LO），用于光学有效载荷的相干检测。所提出的方案通过调节有效载荷带宽为动态光分组交换提供了良好的灵活性，并且还可以有效地减少用于分组产生/检测的激光器，调制器和接收器的数量。我们在12.5 GHz网格中提供灵活速率的数据包生成/检测和标签交换的概念验证演示。还研究了串扰对级联标签交换的影响。 （C）2017 Elsevier Inc.保留所有权利。

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  • 来源
    《Optical fiber technology》 |2017年第3期|80-85|共6页
  • 作者

    Wu Zhongying; Li Juhao; Tian Yu; Ge Dawei; Zhu Paikun; Chen Yuanxiang; Chen Zhangyuan; He Yongqi;

  • 作者单位

    Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China;

    Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China;

    Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China;

    Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China;

    Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China;

    Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China;

    Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China;

    Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China;

  • 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

    Optical label switching; Flexible-rate packet generation/detection; Label swapping;

    机译：光学标签交换;灵活速率的数据包生成/检测;标签交换;

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