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Effect of Cross Phase Modulation on Channel Compensation in 320 Gbps Intensity Modulation / Direct Detection WDM Transmission Systems  

이성렬 (목포해양대학교 해양전자통신공학부)
김지웅 ((주)휴메이)
손성찬 (하나로통신(주))
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.8, no.5, 2004 , pp. 1134-1140 More about this Journal
Abstract
In this paper, we investigated the effect of cross phase modulation(XPM) on compensation for WDM channel distortion due to chromatic dispersion, self phase modulation and XPM as a function of fiber dispersion coefficient and modulation format in 320 Gbps WDM systems. The considered WDM transmission system is based on mid-span spectral inversion(MSSI) compensation method, which has highly nonlinear dispersion shifted fiber(HNL-DSF) as nonlinear medium of optical phase conjugator (OPC) in the mid-way of total transmission line. We confirmed that the maximum channel input power resulting 1 dB eye opening penalty is reduced due to XPM effect on channel distortion, even if MSSI method was applied to WDM system. But, we confirmed that the effect of XPM on channel distortion becomes decrease as fiber dispersion coefficient of WDM system becomes larger. Futhermore, we confirmed that NRZ is better than RZ as a modulation format for similarly compensating overall WDM channels in WDM system with large fiber dispersion coefficient in order to minimize the effect of the XPM on channel distortion.
Keywords
Optical Phase Conjugate; (OPC); Highly Nonlinear Dispersion Shifted Fiber (HNL-DSF); Cross Phase Modulation (XPM); Mid-Span Spectral Inversion (MSSI);
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Times Cited By KSCI : 1  (Citation Analysis)
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