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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 18 — Sep. 6, 2004
  • pp: 4235–4245

Analytical characterization of optical power and noise figure of forward pumped Raman amplifiers

Malin Premaratne  »View Author Affiliations

Optics Express, Vol. 12, Issue 18, pp. 4235-4245 (2004)

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We show that it is possible to find analytic expressions for characterizing the evolution of signal and noise photon numbers along the active fiber of a forward-pumped Raman amplifier with unequal signal and pump loss coefficients. We confirm the validity of the result by comparing the analytical solutions with numerical calculations and by analytically deriving the well-known 3 dB noise figure limit for high Raman gain. Apart from aiding the analysis and design of forward pumped Raman amplifiers, these results also enable one to find approximate analytical solutions for bidirectional Raman amplifiers and backward pumped Raman amplifiers with Rayleigh backscattering and Brillouin scattering.

© 2004 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators

ToC Category:
Research Papers

Original Manuscript: July 27, 2004
Revised Manuscript: August 25, 2004
Published: September 6, 2004

Malin Premaratne, "Analytical characterization of optical power and noise figure of forward pumped Raman amplifiers," Opt. Express 12, 4235-4245 (2004)

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