Cross-Phase Modulation Distortion in Multi-Span Dense WDM Systems

  • Hans-Jörg Thiele
  • Robert I. Killey
  • Vitaly Mikhailov
  • Polina Bayvel
Conference paper


The intensity distortion caused by cross-phase modulation (XPM) limits transmission distances and capacities of high-speed, dense WDM systems. Optimisation of system design can minimise the impact of XPM. Pump-probe experiments are described investigating XPM distortion as a function of typical system parameters for a single fibre link and for multi-span transmission using a fibre recirculating loop. Different dispersion maps and their influence on the XPM generation and phase-to-intensity conversion were investigated. The results are in good agreement with theory and computer simulations. The distortion depends strongly on channel walk-off in the system, increasing for narrow channel spacing and low dispersion.


Transmission Distance Stimulate Brillouin Scattering Fibre Dispersion Test Fibre Residual Dispersion 
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Copyright information

© Springer-Verlag London 1999

Authors and Affiliations

  • Hans-Jörg Thiele
    • 1
  • Robert I. Killey
    • 1
  • Vitaly Mikhailov
    • 1
  • Polina Bayvel
    • 1
  1. 1.Optical Networks Group, Department of Electronic and Electrical EngineeringUniversity College LondonLondonUK

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