光学学报, 2014, 34 (s2): s219003, 网络出版: 2014-12-04  

光纤非线性效应估计模型的研究

Research on Estimation Model of Fiber Non-Linearity
作者单位
北京邮电大学信息光子学与光通信国家重点实验室, 北京 100876
摘要
随着光纤通信系统容量的增加和信道间隔的降低,非线性噪声必然成为限制光传输系统发展的重要因素。提出了一种比较准确的仿真模型用来估计把非线性噪声当作加性高斯处理的高斯噪声(GN)模型的适用范围,同时对该模型进行了大量的仿真验证,包括不同的光纤类型和不同的调制格式。仿真结果证明,GN模型的非线性噪声功率谱密度理论解析式在预色散的系统中是非常准确、可靠的。同时,表明在没有预色散的系统中,非线性噪声与调制格式有关,但是预色散能够消除调制格式对非线性噪声的影响。
Abstract
With the increasing of the optical fiber communication system capacity and the reducing of the channel spacing, nonlinear noise is an important factor to limite the development of optical transmission systems. A reliable simulation model is proposed to validate the accuracy of the Gaussian noise (GN) model in which the fiber nonlinearity is modeled as an additive GN process. A thorough simulative validation of that GN model is carried out, including different kinds of optical fibers and different modulation systems. The results consistently indicate that the analytical approximation for the GN model nonlinear interference power spectral density with pre-dispersion is rather accurate and dependable in all the addressed systems scenarios. The simulation results also show that, in the non-pre-dispersion system, the nonlinear noise is associated with modulation format and pre-dispersion can eliminate the influence of modulation format.

乔耀军, 李明, 杨秋虹, 徐菲, 纪越峰. 光纤非线性效应估计模型的研究[J]. 光学学报, 2014, 34(s2): s219003. Qiao Yaojun, Li Ming, Yang Qiuhong, Xu Fei, Ji Yuefeng. Research on Estimation Model of Fiber Non-Linearity[J]. Acta Optica Sinica, 2014, 34(s2): s219003.

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