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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 25, Iss. 6 — Jun. 1, 2007
  • pp: 1458–1465

Mean Relative Intensity Noise Transfer in Fiber Raman Amplifiers Using Multiple-Wavelength Pumps

Yongmei Zhu, Xiupu Zhang, and Guodong Zhang

Journal of Lightwave Technology, Vol. 25, Issue 6, pp. 1458-1465 (2007)

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We present a numerical analysis of mean relative intensity noise (RIN) transfer in a fiber Raman amplifier (FRA) using multiple-wavelength pumps. For the first time, the RIN transfer is investigated to include pump-to-pump and signal-to-signal RIN transfers, together with the “traditional” pump, to signal transfer in a multiple-wavelength pumped FRA. We show that for a multiple-wavelength pumped FRA, pump-to-pump and signal-to-signal RIN transfers induce an increase of RIN transfer magnitude. For a multiple-wavelength counterpumped FRA, in additional to the major pump to signal RIN transfer, pump-to-pump RIN transfer is considerable, and signal-to-signal RIN transfer is very small. For a multiple-wavelength copumped FRA, both pump-to-pump and signal-to-signal RIN transfers increase RIN transfer magnitude significantly. In addition, for both a co- and counterpumped FRAs, particularly for the copumped FRA, the longer wavelength signals experience more RIN transfer than the shorter wavelength signals. Furthermore, the bandwidth of RIN transfer is significantly increased in a multiple-wavelength copumped FRA with multiple input signals compared to a single-wavelength copumped FRA with an input signal.

© 2007 IEEE

Yongmei Zhu, Xiupu Zhang, and Guodong Zhang, "Mean Relative Intensity Noise Transfer in Fiber Raman Amplifiers Using Multiple-Wavelength Pumps," J. Lightwave Technol. 25, 1458-1465 (2007)

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