The numerical study of pulse evolution in self-similar parabolic pulse amplifier

In this article, the influences of initial pulse and gain fiber parameters on the pulse's self-similar evolution are studied by numerical simulation. We propose and demonstrate that dispersion length is the determining factor of pulse's self-similar evolution. For a given input pulse, if dispersion length is comparable or smaller than fiber length, it can evolve into similariton, otherwise it can not. Under the self-similar evolution condition, increasing pulse energy and gain coefficient can accelerate self-similar evolution, otherwise the effect is not evident. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1785–1787, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22636