Journal
OPTICS AND LASER TECHNOLOGY
Volume 43, Issue 7, Pages 1270-1273Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2011.03.021
Keywords
Four-wave mixing; Relative intensity noise; Stimulated Brillouin scattering
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Funding
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20104307110020]
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Four-wave mixing (FWM) is a significant nonlinear effect in wavelength division multiplexing (WDM) fiber-optic systems. For two-wave transmission, it is easily found that the FWM noise power decreases with frequency spacing and increases with signal power. However, the variation of relative intensity noise (RIN) with frequency spacing and signal power is only 2 dB at most. The intensity fluctuations induced by the energy exchange between the FWM generated new waves and the original ones are trivial and the influence of FWM on RIN can be neglected. It is also found that the increase of RIN with signal power is mainly attributed to stimulated Brillouin scattering (SBS) rather than FWM. (C) 2011 Elsevier Ltd. All rights reserved.
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