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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 23, Iss. 1 — Jan. 1, 2005
  • pp: 310–

Analysis of Degenerate Four-Wave-Mixing Noise in Return-to-Zero Optical Transmission Systems Including Walk-Off

Shiva Kumar

Journal of Lightwave Technology, Vol. 23, Issue 1, pp. 310- (2005)


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Abstract

A noise theory for four-wave-mixing (FWM) tone generated by nonlinear interaction of channels of a wavelength-division-multiplexed system is described. Analytical expressions for power spectral density and variance of FWM noise are derived without ignoring group-velocity walk-off between channels. The results show that the variance of FWM noise exhibits sharp minima and maxima as a function of channel separation which is due to the coherent interaction between channels. When the walk-off distance is large or comparable to effective fiber length, FWM penalty can be reduced by introducing a suitable initial delay between interacting channels.

© 2005 IEEE

Citation
Shiva Kumar, "Analysis of Degenerate Four-Wave-Mixing Noise in Return-to-Zero Optical Transmission Systems Including Walk-Off," J. Lightwave Technol. 23, 310- (2005)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-23-1-310


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