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Influence of Cross Phase Modulation on Performance of Dense Wavelength Division Multiplexed Systems

Zhu Xu,Lin Rujian (School of Communication and Information Engineering,Shanghai University, Shanghai Jiading,China 201800)  
This paper investigates the influence of cross phase modulation (XPM)on the performance of dense wavelength division multiplexed optical fiber transmission systems.Based on the analysis of XPM induced phase shift on the probe channel while the interfering channel is sinusoidal intensity modulated,we establish a system model that describes arbitrary modulated signals transmitting through XPM channels,and apply it to the case of base band NRZ digital signal transmitting.Then we calculate the XPM induced system optical power penalty which proved to be large enough to be considered in system design.
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