Distributed Raman amplifier crosstalk effect in different kind of modulation for forward, backward and bidirectional pumping

摘要

ThispaperstudythevariancecrosstalkstandarddeviationinaclosedformulaforSelf-PhaseModulation(SPM)andCross-PhaseModulation(XPM),whichisveryimportantparametersinnonlineareffectphenomenawhichaffectthesystemperformance.ThemodelisusedtoanalysisthebestperformancewithminimumcrosstalkinWDMsystemandthedirecteffectofincreasingtheinputpowersignalinthesystemwithrespecttothebitrate,pulseshape,modulationformulaandthemulti-pumpingdistributedRamanamplifier(forward,backwardandbi-directional)pumping.