Coherent crosstalk in ultradense WDM systems

  title={Coherent crosstalk in ultradense WDM systems},
  author={P. J. Winzer and Martin Pfennigbauer and R.-J. Essiambre},
  journal={Journal of Lightwave Technology},
We present extensive numerical studies on the determination of coherent wavelength-division multiplexing (WDM) crosstalk penalties for ultradense wavelength-division multiplexed (DWDM) systems, focusing on carrier-suppressed return-to-zero (CSRZ) as well as on 67% duty cycle differential phase-shift keying (67% RZ-DPSK) at a spectral efficiency of 0.8 b/s/Hz. Our analyses reveal large statistical variations in the predicted required optical signal-to-noise ratio (OSNR) when changing the WDM… CONTINUE READING
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