Evolution d'impulsions paraboliques dans un amplificateur a fibre optique hors regime asymptotique

摘要

We show analytically and numerically that parabolic pulses and similaritons are not always synonyms and that a self-phase modulation amplification regime can precede the self-similar evolution. Properties of the recompressed pulses after SPM amplification are investigated. We also demonstrate that negatively chirped parabolic pulses can exhibit a spectral recompression leading to high-power chirp-free parabolic pulses.