An investigation of the noise figure and conversion efficiency of 0.98 mu m pumped erbium-doped fiber amplifiers under saturated conditions

Author

Smart, R.G. ; Zyskind, J.L. ; Sulhoff, J.W. ; DiGiovanni, D.J.

Author_Institution

AT&T Bell Lab., Holmdel, NJ, USA

Volume

4

Issue

11

fYear

1992

Firstpage

1261

Lastpage

1264

Abstract

The results of an investigation of the noise figure and conversion efficiency or erbium-doped fiber amplifiers for unsaturated, moderately saturated, and heavily saturated operation are reported. Quantum-limited 3 dB noise figures result only for small signal operation of low-gain amplifiers. For high gain, partially saturated amplifiers useful as in-line repeaters, bidirectional pumping results in the best combination of noise performance and conversion efficiency while co-propagation of signal and pump produces the best noise performance.<>

Keywords

erbium; fibre lasers; optical communication equipment; optical pumping; optical saturation; 0.98 micron; EDFA; ER-doped fibre amplifiers; IR; bidirectional pumping; conversion efficiency; high gain; in-line repeaters; laser pumping; low-gain amplifiers; noise figure; partially saturated amplifiers; saturated conditions; signal/pump co-propagation; small signal operation; Band pass filters; Distortion measurement; Erbium-doped fiber amplifier; Leg; Low-noise amplifiers; Noise figure; Optical fiber polarization; Power amplifiers; Power generation; Preamplifiers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.166962

Filename

166962