title: Understanding Raman-shifting multipeak states in photonic crystal fibers: two convergent approaches.
abstract: In this Letter we give theoretical explanations for the recent observations of the excitation of Raman-shifting pulse pairs in solid-core photonic crystal fibers. The formation of these pairs is surprisingly common in the deep anomalous dispersion regime of a large variety of highly nonlinear optical fibers, away from zero group-velocity dispersion points. We have developed two different theoretical models, which agree very well in their conclusions. A qualitative and a quantitative explanation of pair formation is provided, and the existence of multipeak states is predicted.
authors.affiliation: Universität Rostock, Institut für Physik, 18051 Rostock, Germany. alexander.hause2@uni-rostock.de
authors.forename: Alexander
authors.initials: A
authors.lastname: Hause
authors.forename: Truong X
authors.initials: TX
authors.lastname: Tran
authors.forename: Fabio
authors.initials: F
authors.lastname: Biancalana
authors.forename: Alexander
authors.initials: A
authors.lastname: Podlipensky
authors.forename: Philip St J
authors.initials: PS
authors.lastname: Russell
authors.forename: Fedor
authors.initials: F
authors.lastname: Mitschke