Evaluation of Optical Transport Unit Line-Card Integration in Spatially and Spectrally Flexible Optical Networks in Terms of Device Cost and Network Performance
Evaluation of Optical Transport Unit Line-Card Integration in Spatially and Spectrally Flexible Optical Networks in Terms of Device Cost and Network Performance
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DOI：
10.1109/jlt.2022.3195282
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发表时间：
2022-10
影响因子：
4.7
通讯作者：
Weichang Zheng;Mingcong Yang;Chenxiao Zhang;Yu Zheng;Yongbing Zhang
中科院分区：
文献类型：
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作者：
Weichang Zheng;Mingcong Yang;Chenxiao Zhang;Yu Zheng;Yongbing Zhang
互联网流量的爆炸性增长加速了光传输网络的发展，强调了扩大传输容量的必要性。为了克服传统单芯/模光纤传输的局限性，提出了空分复用（SDM）技术。基于sdm的光网络中的空间和频谱超信道（sp&spch）技术实现了大容量传输。这种光传输技术可以由sp&spe SpCh收发器和可重构光加/丢复用器（ROADM）支持，同时在空间和频谱域分配光载波（OCs）。预先安装在每个网络节点上的预制收发器和roadm的架构是固定的。这就需要确定影响收发器和ROADM设计的适当的空间和频谱粒度组合，以有效地利用交换容量并降低实施成本。本文主要针对不同粒度组合下的N核mcf网络部署问题进行性能分析。对基于4核mcf的网络的详细评估表明，设备成本和网络性能受到空间和频谱粒度的影响，可以为现实世界的网络规划和设计提供指导。特别是在网络设计中，需要考虑到基于不同粒度的设备成本和网络性能之间的权衡。
The explosive growth of internet traffic has accelerated the evolution of optical transport networks, emphasizing the need to expand transmission capacity. To overcome the limitations of conventional single-core/mode fiber-based optical transmission, spatial-division multiplexing (SDM) has been proposed. Spatial and spectral superchannel (Spa & Spe SpCh) technology in SDM-based optical networks realizes high-capacity transmission. Such an optical transmission technology can be supported by the Spa & Spe SpCh transceiver and the reconfigurable optical add/drop multiplexer (ROADM), allocating optical carriers (OCs) in spatial and spectral domains simultaneously. The architectures of the manufactured transceivers and ROADMs installed in advance at each network node are fixed. This necessitates the determination of the appropriate spatial and spectral granularity combination that affects the transceiver and ROADM designs to efficiently utilize the switching capacity and reduce the implementation costs. In this paper, we focus on the performance analysis for the $N$-core MCF-based network deployment issues under different granularity combinations. Detailed evaluation of a 4-core MCF-based network reveals that the device cost and network performance are influenced by spatial and spectral granularities and can provide guidance for real-world network planning and design. In particular, the trade-off between device cost and network performance based on different granularities should be taken into account in network design.