title: Evidence of a saturable-absorption effect in heavily erbium-doped fibers.
abstract: A new configuration for erbium-doped fiber lasers in which two different connected fibers are used is studied: one is heavily and the other weakly doped. It is demonstrated that the dynamics of such a system depends on the fiber into which the pump is injected. The experimental results are interpreted in the framework of an ion-pair interaction model.
authors.forename: S
authors.initials: S
authors.lastname: Colin
authors.forename: E
authors.initials: E
authors.lastname: Contesse
authors.forename: P L
authors.initials: PL
authors.lastname: Boudec
authors.forename: G
authors.initials: G
authors.lastname: Stephan
authors.forename: F
authors.initials: F
authors.lastname: Sanchez