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In this article, we present a performance comparison, in terms of accuracy and computational cost, of the numerical techniques used in the resolution of the models of photonic crystal fibers.These models allow to obtain the electromagnetic field distributions and, once known this one, the dispersion parameter and the nonlinear coefficient. In this study, we conclude that the central finite difference scheme of fourth order would be the most advantageous. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1049–1053, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27504

In this work, we develop a vectorial model, for optical communications, using distributed Raman amplification (DRA) applied to vectorial soliton pulses in monomode fiber optics. The main result, a dependent polarization effective Raman gain coefficient, is calculated considering the random birefringence character of the fiber and the relative mismatch between the continuous wave (CW) pump and the signal. The Method of Moments allows the determination of the optimal initial conditions to achieve a better performance in our system. With these starting values, the simulations carried out with the Split-Step Fourier Method (SSFM) elucidate the influence of the peak power and prechirping initial phase control on the vectorial soliton propagation.

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