Spectral effective solutions for mixed line rate WDM-PON systems

I. Kurbatska, V. Bobrovs, A. Alsevska, I. Lyashuk, L. Ģēģere
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Abstract

The paper analyses the solutions of increasing the spectral efficiency (SE) of multiple line rate (MLR) wavelength-division-multiplexing passive optical network (WDM-PON). Paper analyses the increasing the SE of WDM-PON by applying of mixed transmission system with MLR. The MLR approach allows implementing gradual transition to higher data rates within the limited expenses. The main goal of the paper is to establish the most spectral-effective solution for applying the eight channels with 40Gbit/s line rate in sixteen channel 10Gbit/s transmission system. Duobinary (DB) modulation format is used for channels with 40Gbit/s line rate, while the non-return-to-zero (NRZ) is used for 10Gbit/s channels. For the increasing of SE we apply unequal channel spacing between different channels. The paper concentrates on the determination of minimal channel spacing realizable by two 10Gbit/s channels, as well as between two 40 Gbit/s channels and between 10 Gbit/s and 40 Gbit/s channels. For ensuring maximal possible SE, different channel topologies are considered to ensure the most effective optimization of channel spacing. The paper also evaluates the main limiting factors of SE and system performance, analysing the impact of chromatic dispersion and non-linear effects.
混合线速率WDM-PON系统的频谱有效解决方案
分析了提高多线率波分复用无源光网络(WDM-PON)频谱效率的解决方案。本文分析了应用多路复用混合传输系统提高WDM-PON的SE。MLR方法允许在有限的费用范围内逐步过渡到更高的数据速率。本文的主要目标是建立在16通道10Gbit/s传输系统中应用8通道40Gbit/s线速率的最有效的频谱有效解决方案。对于线路速率为40Gbit/s的信道采用双二进制(DB)调制格式,而对于10Gbit/s的信道采用非归零(NRZ)调制格式。为了提高SE,我们在不同信道之间采用不等的信道间距。本文主要研究了两个10Gbit/s信道、两个40gbit /s信道以及10Gbit/s和40gbit /s信道之间可实现的最小信道间距的确定。为了确保最大可能的SE,考虑了不同的信道拓扑,以确保最有效地优化信道间距。本文还评价了影响系统性能的主要因素,分析了色散和非线性效应对系统性能的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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