In optical transmissions, a fundamental role is covered by optical amplifiers, which allow to propagate the transmitted signal along the fiber link even for huge routes restoring the optical power level. Recently, the focus of the research - and also of the market - moves to the comprehension of the Raman effect and to its applications on the optical amplification. Starting from a physical layer description of an optical fiber link, an optimization tool has been developed to make efficient and suitable the design of Raman amplifiers. The optimization framework is able to refine design parameters of Raman pumps - as input optical power and wavelength - to get the maximum performance in terms of gain profile.