The theory of the growth of the total first-order Raman stokes power with the corresponding depletion of the aser pump power in optical fibers is examined. Numerical solutions are given for circumstances where the losses at the pump and Stokes wavelengths are unequal. The nature of the power-coupling process and the depletion of the total power at all wavelengths can be described without a full analytical solution. The variation of the output power with respect to input power when the fiber length is a constant is also studied.
© 1986 Optical Society of America
W. Paul Urquhart and Peter J. R. Laybourn, "Stimulated Raman scattering in optical fibers with nonconstant losses: a two-wavelength model," Appl. Opt. 25, 1746-1753 (1986)