光正交频分复用（OFDM）系统中光纤非线性导致的功率限制计算

Calculation of power limit due to fiber nonlinearity in optical OFDM systems.

作者信息

Lowery Arthur J, Wang Shunjie, Premaratne Malin

出版信息

Opt Express. 2007 Oct 1;15(20):13282-7. doi: 10.1364/oe.15.013282.

DOI:10.1364/oe.15.013282

PMID:19550598

Abstract

We develop a simple formula for estimating the effect of Four- Wave Mixing (FWM) on received signal quality in coherent optical systems using Orthogonal Frequency Division Multiplexing (OFDM) for dispersion compensation. This shows the nonlinear limit is substantially independent of the number of OFDM subcarriers. Our analysis agrees well with full split-step Fourier method simulations, so allows the nonlinear limit of multi-span systems to be estimated without lengthy simulations.

摘要

我们推导出一个简单公式，用于估计在使用正交频分复用（OFDM）进行色散补偿的相干光系统中，四波混频（FWM）对接收信号质量的影响。这表明非线性极限基本上与OFDM子载波的数量无关。我们的分析与全分步傅里叶方法模拟结果吻合良好，因此无需进行冗长的模拟就能估计多跨距系统的非线性极限。