A Comparative Study on Variable vs. Fixed Subchannel Symbol Rates with Different Modulation Formats in WSS Filtering Penalty-Aware Elastic Optical Networks
A Comparative Study on Variable vs. Fixed Subchannel Symbol Rates with Different Modulation Formats in WSS Filtering Penalty-Aware Elastic Optical Networks
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WSS 滤波惩罚感知弹性光网络中不同调制格式的可变子信道符号率与固定子信道符号率的比较研究
DOI：
10.1109/icton51198.2020.9203299
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
A. Fumagalli
中科院分区：
文献类型：
--
作者：
Tianliang Zhang;Mustafa Al;A. Samadian;R. Hui;A. Fumagalli
随着波长选择开关（WSS）滤波代价对弹性波分复用（WDM）网络信号完整性的影响越来越大。可以应用子载波复用来减轻WSS滤波惩罚。我们调查，通过仿真，使用多个子载波可变符号率每个子载波和不同的调制格式，以尽量减少WSS滤波所造成的传输惩罚。两个弹性WDM网络拓扑结构的光路的可行性也研究了使用所描述的技术。
The impact of the wavelength selective switch (WSS) filtering penalty on the signal integrity of elastic wavelength division multiplexing (WDM) network becomes increasingly important as the optical channel spacing goes finer in order to achieve higher spectrum utilization. Subcarrier multiplexing can be applied to mitigate the WSS filtering penalty. We investigate, by simulations, the use of multiple subcarriers with variable symbol rate per subcarrier and different modulation formats to minimize the transmission penalty caused by WSS filtering. Lightpath feasibility in two elastic WDM network topologies is also studied using the described technique.