Signal amplification in strongly pumped fiber amplifiers

Author

Hardy, Amos ; Oron, R.

Author_Institution

Fac. of Eng., Tel Aviv Univ., Israel

Volume

33

Issue

3

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

307

Lastpage

313

Abstract

Signal amplification is analyzed in strongly pumped fiber amplifiers both for three-level and four-level transitions, including scattering loss and excited state absorption. Simple analytic expressions are derived for the signal amplification and pump attenuation, along the fiber length, when either the signal and the pump are injected at the same fiber end (forward pumping) or when they are injected at the two opposite ends (backward pumping). Numerical examples for rare-earth doped fibers show excellent agreement between the analytical solution and the exact numerical solutions of the rate-equations for practical operating conditions

Keywords

excited states; fibre lasers; laser theory; light scattering; optical fibre losses; optical pumping; rare earth metals; backward pumping; exact numerical solutions; excited state absorption; fiber length; forward pumping; four-level transitions; practical operating conditions; pump attenuation; rare-earth doped fibers; rate-equations; scattering loss; signal amplification; simple analytic expressions; strongly pumped fiber amplifiers; three-level transitions; Absorption; Doped fiber amplifiers; Equations; Erbium-doped fiber lasers; Laser modes; Optical fiber amplifiers; Optical fibers; Optical scattering; Pump lasers; Signal analysis;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.555997

Filename

555997