Analysis of distributed erbium-doped fiber amplifiers with fiber background loss

Author

Desurvire, E.

Author_Institution

Dept. of Electr. Eng., Columbia Univ., New York, NY, USA

Volume

3

Issue

7

fYear

1991

fDate

7/1/1991 12:00:00 AM

Firstpage

625

Lastpage

628

Abstract

An accurate model for erbium-doped fiber amplifiers with fiber background loss applicable to the unsaturated gain regime is presented. Exact analytical solutions are derived for the output pump power, gain, and amplified spontaneous noise as a function of input pump power in the cases of unidirectional or bidirectional pumping. An exact relation is also derived between the pump threshold and the pump required for fiber transparency. Such expressions are particularly useful to model distributed fiber amplifiers and to determine the optimal fiber parameters corresponding to a given pumping scheme. As an example, the analytical solutions are used to study the pump power requirement for distributed fiber amplifiers unidirectionally pumped at 1.48 mu m, and to determine an optimum Er/sup 3+/ absorption coefficient.<>

Keywords

erbium; fibre lasers; laser theory; light absorption; optical losses; optical pumping; 1.48 micron; Er/sup 3+/ absorption coefficient; Er/sup 3+/ fibre lasers; amplified spontaneous noise; bidirectional pumping; distributed erbium-doped fiber amplifiers; fiber background loss; fiber transparency; input pump power; laser gain; laser pumping; output pump power; pump power requirement; pump threshold; pumping scheme; unidirectional pumping; unidirectionally pumped; unsaturated gain regime; Absorption; Character recognition; Communication systems; Distributed amplifiers; Equations; Erbium; Erbium-doped fiber amplifier; Optical fiber devices; Optical fiber theory; Power amplifiers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.87934

Filename

87934