Erbium doping introduces a resonant contribution to the group-velocity dispersion of the amplifier host fiber. A method for evaluating the erbium-induced group-velocity dispersion is proposed. This dispersion method requires the knowledge of the cold-cavity loss along with the gain and absorption spectrum of the active medium. An experimental measurement of group-velocity dispersion in a tunable actively mode-locked erbium-doped fiber laser confirms the validity of the method.
© 1993 Optical Society of America
Original Manuscript: June 1, 1993
Published: December 1, 1993
F. Fontana, M. Romagnoli, M. Midrio, P. Franco, G. Bordogna, and G. Grasso, "Evaluation and measurement of the resonant group-velocity dispersion in erbium-doped fiber lasers," Opt. Lett. 18, 2011-2013 (1993)