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

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

Abstract

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.

Keywords

Demultiplexing 

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References

  1. [1]
    G. P. Agrawal, “Nonlinear Fiber Optics”, Academic Press, 2nd edition 1996.Google Scholar
  2. [2]
    F. Forghieri R. W. Tkach, A. R. Chraplyvy and D. Marcuse, “Reduction of Four-Wave Mixing Crosstalk in WDM Systems using unequally spaced channels”, IEEE Photon. Tech. Lett., vol. 6, pp. 754–756, 1994.CrossRefGoogle Scholar
  3. [3]
    G. Belotti, M. Varani, C. Francia, and A. Bononi, “Intensity Distortion Induced by Cross-Phase Modulation and Chromatic Dispersion in Optical Fiber Transmissions with Dispersion Compensation”, IEEE Photon. Technol. Lett, vol. 10, pp. 1745–1747, Dec. 1998[4] R. A. Saunders, B. L. Patel, H. J. Harvey and A. Robinson, “Impact of Cross-Phase Modulation for WDM Systems over Positive and Negative Dispersion NZ-DSF and Methods for its Suppression”, Electron. Lett., vol. 32, pp. 2206-2207, Nov. 1996CrossRefGoogle Scholar
  4. [5]
    R. Hui, Y. Wang, K. Demarest and C. Allen, “Frequency Response of Cross-Phase Modulation in Multispan WDM Optical Fiber Systems”, IEEE Photon. Tech. Lett., vol. 10, pp. 1271–1273, Sept. 1998.CrossRefGoogle Scholar
  5. [6]
    T. K. Chiang, N. Kagi, M. E. Marhic and L. G. Kazovsky, “Cross-Phase Modulation in Fiber Links with Multiple Optical Amplifiers and Dispersion Compensators”, J. Lightwave Tech., vol. 14, pp. 249–259, Mar. 1996.CrossRefGoogle Scholar
  6. [7]
    A. Bononi, C. Francia and G. Belotti, “Impulse Response of Cross-Phase Modulation Filters in Multi-Span Transmission Systems with Dispersion Compensation”, Optical Fiber Tech., vol. 4, pp. 371–383, Dec. 1998.CrossRefGoogle Scholar
  7. [8]
    F. N. Timofeev, P. Bagvel, E. G. Churin and P. Gambini, “Penalty-free Operation of a Concave Free-space Grating Demultiplexer at 2.5 Gbit/s with 0.2-0.6nm Channel Spacing”, Proc. European Conference on Optical Communications 1996, vol. 2, pp. 321-324.Google Scholar
  8. [9]
    H. J. Thiele, R. I. Killey and P. Bagvel, “Influence of fibre dispersion and bit rate on cross-phase modulation induced distortion in amplified optical links”, Electron. Lett., 34,(21), 1998, pp. 2050–2051.CrossRefGoogle Scholar
  9. [10]
    H. J. Thiele, R. I. Killey and P. Bagvel, “Pump-probe investigation of cross-phase modulation in standard-fibre, dispersion compensated WDM recirculating loop”, Conference on Lasers and Electro-Optics 1999, Conference proceedings CWH2.Google Scholar

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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