Study of retarded Raman response function on ultra-short pulse propagation inside silica-based optical fibers

摘要

The retarded Raman response function of a medium has an extensive contribution on spectral pulse broadening. In almost all theoretical researches have done on the topic of spectral broadening of the propagated ultra-short pulse inside silica-based waveguides, the conventional form of Raman response function is considered. In the present paper, by simulating generalized nonlinear Schrodinger equation, we investigate the impact of a newer suggested Raman response function of silica on the evolution of the propagated ultra-short pulse through the silica-based photonic crystal fiber. Our simulation results are compared with the theoretical results available in the literature. This comparison indicates that the formed Raman soliton has larger delay when the modified form of the Raman function is considered.