Evaluation of Device Cost, Power Consumption, and Network Performance in Spatially and Spectrally Flexible SDM Optical Networks
Evaluation of Device Cost, Power Consumption, and Network Performance in Spatially and Spectrally Flexible SDM Optical Networks
复制标题
空间和频谱灵活 SDM 光网络中的设备成本、功耗和网络性能评估
DOI：
--
复制
发表时间：
2019
影响因子：
4.7
通讯作者：
Yongbing Zhang
中科院分区：
文献类型：
--
作者：
Mingcong Yang;Qian Wu;Kai Guo;Yongbing Zhang
为了跟上未来几年快速增长的网络流量需求，空分复用(SDM)已经成为一种很有前途的技术，可以克服当前基于波分复用的光网络的局限性。基于SDM的光传输的关键优势是通过扩展可用的空间维度来增加网络容量。在此背景下，已经提出了几种创新技术来支持空间和频谱灵活的全光传输。一种典型的这种技术被称为空间和频谱超信道(Spa&SPE Spch)传输。最新设计的SpA&SPE SpCH收发器可以支持高速传输，并具有出色的频谱效率，因为它允许光载波在空间和频谱域中灵活分布，而不受保护频带的限制。此外，已经开发了具有不同空间交换粒度和分插端口的基于SDM的可重配置光分插复用器(ROADM)，以支持超信道传输(例如，路由和分插)。此外，近年来还提出了支持空间换道的ROADM，可以进一步提高网络层的路由灵活性。上述技术的不同实现模式各有其优缺点。这些技术可以以各种方式组合在一起，以支持不同类型的SDM传输，从而导致不同的网络性能。本文对SDM传输系统在不同实现方式下的设备成本、功耗和网络性能进行了评估，以期为以后的研究提供参考。
To keep pace with the rapidly increasing network traffic demand anticipated in the coming years, space-division multiplexing (SDM) has become a promising technology for overcoming the limitations of the current wavelength-division multiplexing based optical networks. The key advantage of SDM-based optical transmission is that it increases the network capacity by extending the available spatial dimensions. In this context, several innovative technologies have been proposed to support spatially and spectrally flexible all-optical transmission. One typical technology of this kind is called spatial and spectral super-channel (Spa & Spe SpCh) transmission. Newly designed Spa & Spe SpCh transceivers can support high-speed transmission with excellent spectral efficiency by allowing the optical carriers to be flexibly distributed in both the spatial and spectral domains without guardbands. In addition, SDM-based reconfigurable optical add/drop multiplexers (ROADMs) with varying spatial switching granularities and add/drop ports have been developed to support super-channel transmission (e.g., routing and add/drop). Moreover, ROADMs with spatial lane change support, which can further improve the routing flexibility in the network layer, have also been proposed in recent years. Different modes of implementation of the aforementioned technologies have distinct advantages and disadvantages. These technologies can be combined in various ways to support different types of SDM transmission, leading to variable network performance. In this paper, we evaluate the device cost, power consumption, and network performance of SDM transmission systems based on different implementations of these technologies to serve as a reference for future research.
影响因子：
4.7
作者：
Muhammad, Ajmal;Zervas, Georgios;Forchheimer, Robert
通讯作者：
Forchheimer, Robert