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

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 hi...

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Bibliographic Details
Published in:IEEE photonics technology letters 1992-11, Vol.4 (11), p.1261-1264
Main Authors: Smart, R.G., Zyskind, J.L., Sulhoff, J.W., DiGiovanni, D.J.
Format: Article
Language:English
Subjects:
Band pass filters
Distortion measurement
Erbium-doped fiber amplifier
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Leg
Low-noise amplifiers
Noise figure
Optical elements, devices, and systems
Optical fiber polarization
Optics
Physics
Power amplifiers
Power generation
Preamplifiers
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Summary: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.< >
ISSN:1041-1135
1941-0174
DOI:10.1109/68.166962