Unequally Spaced Channels For Upgrading WDM System From 3-Channel to 22-Channel Preserving no Fwm Crosstalk

  • Xin Miao


Crosstalk due to four-wave mixing (FWM) is increasing sharply when lightwave channel is upgrading in wavelength division multiplexing (WDM) fiber-optical communication systems. A technique, designed the channel wavelength allocation to reduce the crosstalks due to FWM, is submitted, when multi-channel is extended easily from 3-channel to 22-channel in WDM system. The result of simulation is presented. It is shown that suitable unequally channel separations can be found for which no FWM product term is superimposed on any of the transmitted channels, and the bandwidth expansion factor is not always increasing, and the span between the FWM crosstalks and channel wavelengths are not always decreasing, when increasing WDM system channels.


Wavelength Division Multiplex Semiconductor Optical Amplifier Transmission Capacity Channel Wavelength Minimum Separation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    K. O. Hill et al., CW three-wave mixing in single-mode optical fibers, J. Appl. Phys., vol.49, pp. 5098–5106, Oct. 1978.CrossRefGoogle Scholar
  2. 2.
    M. D. Atkinson, N. Santoro, and J. Urrutia, Integer sets with distinct sums and differences and carrier frequency assignments for nonlinear repeaters, IEEE Trans. Commun., vol.COM-34, pp.614–617, June 1986.CrossRefGoogle Scholar
  3. 3.
    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. Technol. Lett., vol.6, no.6, pp.754–756, June 1994.CrossRefGoogle Scholar
  4. 4.
    R. W. Tkach, A. R. Chraplyvy, F. Forghieri, A. H. Gnauck, and R. M. Derosier, Four-photon mixing and high-speed WDM systems, J. Lightwave Technol., vol.13, no.5, pp.841–849, May 1995.CrossRefGoogle Scholar
  5. 5.
    F. Forghieri, R. W. Tkach, and A. R. Chraplyvy, WDM systems with unequally spaced channels, J. Lightwave Technol, vol.13, no.5, pp.889–897, May 1995.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Xin Miao
    • 1
  1. 1.Center for Engineering Design and ResearchCommission of Science Technology and Industry for National DefenseBeijingP. R. of China

Personalised recommendations