Dalga Boyu Bölmeli Çoğullama Sistemlerinde Dört Dalga Karışımı Olayının İletim Performansına Etkisinin Analizi

Year 2011, Volume: 8 Issue: 2, - , 01.11.2011

Nazlı Ergüney Bahadır Hiçdurmaz Sait Eser Karlık Güneş Yılmaz

Abstract

Nonlinear phenomena cause distortions and attenuations on signals transmitted
in an optical fiber. Four-wave mixing (FWM) of these phenomena is one of the most
important reasons for nonlinear crosstalk in wavelength division multiplexing (WDM) systems.
Amplifiers used for extending the transmission distance of WDM systems increase
the FWM effect and therefore the performance of long-haul communication systems is
negatively affected.
In this study, parameters affecting FWM in WDM communication systems and effects of
FWM on transmission performance are analyzed for G.652 step-index single mode optical
fiber. In simulations performed, the level of FWM noise power for different values of channel
spacing, the effect of channel power variation on first and second order FWM crosstalk,
the variation of FWM power with respect to different values of transmission distance and
chromatic dispersion, the relation of FWM efficiency and transmission distance and the
effect of FWM noise on signal to noise ratio (SNR) are investigated.

Keywords

FWM, WDM, optical fiber, SNR

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