Properties of nonlinear noise in long, dispersion-uncompensated fiber links
Properties of nonlinear noise in long, dispersion-uncompensated fiber links
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DOI：
10.1364/oe.21.025685
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发表时间：
2013-11-04
期刊：
影响因子：
3.8
通讯作者：
Shtaif, Mark
中科院分区：
文献类型：
--
作者：
Dar, Ronen;Feder, Meir;Shtaif, Mark
研究了光纤通信系统中大累积色散下非线性干涉噪声的特性。我们的重点是解决的高斯噪声（GN）模型（根据NLIN是加性高斯）和最近发表的时域分析，属性显着不同的属性NLIN的结果之间的差异。在回顾这两种方法后，我们确定了几个不合理的假设，这些假设是GN模型推导的关键，也是造成差异的原因。我们得到真正的NLIN功率，并验证NLIN不是加性高斯，而是强烈依赖于在感兴趣的信道中传输的数据。此外，我们验证了时域模型的数值，并证明了强烈的依赖于干扰信道的调制格式的NLIN。(c)2013年美国光学学会
We study the properties of nonlinear interference noise (NLIN) in fiber-optic communications systems with large accumulated dispersion. Our focus is on settling the discrepancy between the results of the Gaussian noise (GN) model (according to which NLIN is additive Gaussian) and a recently published time-domain analysis, which attributes drastically different properties to the NLIN. Upon reviewing the two approaches we identify several unjustified assumptions that are key in the derivation of the GN model, and that are responsible for the discrepancy. We derive the true NLIN power and verify that the NLIN is not additive Gaussian, but rather it depends strongly on the data transmitted in the channel of interest. In addition we validate the time-domain model numerically and demonstrate the strong dependence of the NLIN on the interfering channels' modulation format. (c) 2013 Optical Society of America