Closed-form expressions for nonlinear transmission performance of densely spaced coherent optical OFDM systems

被引：136

作者：

Chen, Xi ^{[1
]}

Shieh, William

机构：

[1] Univ Melbourne, Ctr Ultrabroadband Informat Networks, Dept Elect & Elect Engn, Melbourne, Vic 3010, Australia

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 18期

关键词：

FIBER;

D O I：

10.1364/OE.18.019039

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

There has been a trend of migration to high spectral efficiency transmission in optical fiber communications for which the frequency guard band between neighboring wavelength channels continues to shrink. In this paper, we derive closed-form analytical expressions for nonlinear system performance of densely spaced coherent optical OFDM (CO-OFDM) systems. The closed-form solutions include the results for the achievable Q factor, optimum launch power density, nonlinear threshold of launch power density, and information spectral efficiency limit. These analytical results clearly identify their dependence on system parameters including fiber dispersion, number of spans, dispersion compensation ratio, and overall bandwidth. The closed-form solution is further substantiated by numerical simulations using distributed nonlinear Schrodinger equation. (c) 2010 Optical Society of America

引用

页码：19039 / 19054

页数：16

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