The growth of the Raman Stokes spectrum in single-mode optical fibers is studied in circumstances where there is a significant variation of loss with wavelength. It is shown that the dependence of pump and total Stokes power with fiber length can be calculated from only two equations when an effective Stokes loss is used. The effective Stokes loss is calculated both analytically and numerically for a linear increase of loss with wavelength. Good agreement is found for the two methods of computation.
© 1986 Optical Society of America
W. Paul Urquhart and Peter J. R. Laybourn, "Stimulated Raman scattering in optical fibers with nonconstant losses: a multiwavelength model," Appl. Opt. 25, 2592-2599 (1986)