The behavior of the nonlinear effects in fiber optic propagation is defined by Schrödinger's generalized non-linear equation (NLSE), which describes the propagation of the light in a non-linear dispersive fiber, with attenuation and it explains the behavior of pulses of light in the optical channel. These effects are responsible for non-linear phenomena such as self-phase modulation SPM, cross-phase modulation XPM and the fourth wave mix FWM. However, the presence of fiber dispersion and non-linearity factors make this equation complex to solve analytically, resorting to other methods and numerical algorithms that allow reaching its solution in a concise and detailed manner. This article presents the research carried out and the results obtained from the modeling and evaluation of Schrödinger's nonlinear equation for a radio-fiber optic system, in which the main objective is to observe the characteristics of the signals transmitted as length of the fiber, observing the effect of the parameters of linearity and non-linearity.