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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 21, Iss. 10 — Oct. 1, 2003
  • pp: 2194–

Performance Limitation Due to Statistical Raman Crosstalk in a WDM System With Multiple-Wavelength Bidirectionally Pumped Raman Amplification

Xiang Zhou and Martin Birk

Journal of Lightwave Technology, Vol. 21, Issue 10, pp. 2194- (2003)


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Abstract

A general theoretical model of statistical Raman crosstalk and its impact on system performance in a multiwavelength bidirectionally pumped Raman fiber amplifier (RFA) is developed for the first time, where we have taken modulation statistics, dispersion-induced pulse walk-off and signal-induced pump depletion into account. Two kinds of statistical Raman crosstalk, from signal-induced forward-pump depletion and from signal-signal Raman interaction,are included in one model. Formulas for normalized Raman crosstalk, Raman crosstalk-induced relative intensity noise spectral density, and its variance and system performance impact in terms of Q penalty are presented for both a single-span system and a dispersion-compensated multispan wavelength-division-multiplexed (WDM) link. Based on these formulas,we numerically investigate the impact of Raman crosstalk on system performance in a three-wavelengths bidirectionally pumped 40 × 40-Gb/s WDM system for various fiber types. In addition, Raman crosstalk in a four-wavelength bidirectionally pumped RFA was experimentally measured. The results agree well with our theory.

© 2003 IEEE

Citation
Xiang Zhou and Martin Birk, "Performance Limitation Due to Statistical Raman Crosstalk in a WDM System With Multiple-Wavelength Bidirectionally Pumped Raman Amplification," J. Lightwave Technol. 21, 2194- (2003)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-21-10-2194

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