Practical XPM Compensation Method for Coherent Optical OFDM Systems

被引：26

作者：

Du, Liang Bangyuan ^{[1
]}

Lowery, Arthur J. ^{[1
]}

机构：

[1] Monash Univ, Dept Elect & Comp Syst Engn, Clayton, Vic 3800, Australia

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2010年 / 22卷 / 05期

基金：

澳大利亚研究理事会;

关键词：

Chromatic dispersion (CD); cross-phase modulation (XPM); fiber nonlinearity compensation; optical Kerr effect; self-phase modulation (SPM); wavelength-division multiplexing (WDM); NONLINEARITY PRECOMPENSATION; DISPERSION; LINKS; POSTCOMPENSATION;

D O I：

10.1109/LPT.2009.2039210

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We show that cross-phase modulation in coherent optical orthogonal frequency-division multiplexing (CO-OFDM) is mitigated with a simple intensity-dependent phase-modulation before the wavelength demultiplexer. A single low-bandwidth photodiode is used to estimate the optical power of all wavelength-division-multiplexing channels entering the receiver, and this determines a phase modulation applied to all channels. This method works well in conjunction with self-phase-modulation pre/postcompensation, allowing significant improvements in the performance of OFDM systems over optically dispersion-managed links. Using simulations, we show a 4-dB signal quality improvement in a 2375-km 60-Gb/s CO-OFDM system in the nonlinear limit.

引用

页码：320 / 322

页数：3

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