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Performance of nonlinear interchannel crosstalk pre-compensation at zero-dispersion wavelength using carrier phase-locked WDM

Performance of nonlinear interchannel crosstalk pre-compensation at zero-dispersion wavelength using carrier phase-locked WDM

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The increase in WDM transmission distance at zero-dispersion wavelength made possible by pre-compensation to offset nonlinear interchannel crosstalk is studied. A simulation shows that pre-compensation allows higher fibre launched power and increases the transmission distance by 3.3 times for a 50 GHz-spaced 8-channel WDM system. Pre-compensation is shown to be limited by the undeterministic nonlinear distortion induced by the accumulated amplifier spontaneous emission noise from repeater amplifiers. Also, optical power tolerance of the pre-distorted waveform generated at the transmitter is studied.

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      • A.D. Ellis , F.C. Garcia Gunning . Spectral density enhancement using coherent WDM. IEEE Photonics Technol. Lett. , 2 , 504 - 506
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      • E. Yamazaki , F. Inuzuka , K. Yonenaga , A. Takada . Compensation of interchannel crosstalk induced by optical fiber nonlinearity in carrier phase-locked WDM system. IEEE Photonics Technol. Lett. , 1 , 9 - 11
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