Amplified spontaneous emission in cladding-pumped L-band erbium-doped fiber amplifiers

Propagation of amplified spontaneous emission (ASE) in cladding-pumped long-wavelength-band erbium-doped fiber amplifiers (EDFAs) is analyzed numerically. Forward and backward ASE power dependence on cladding area is analyzed for both pumping directions. ASE power propagating counterdirectionally to...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 13; no. 1; pp. 22 - 24
Main Authors Soderlund, M., Tammela, S., Poyhonen, P., Leppihalme, M., Peyghambarian, N.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2001
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Amplification
Amplifiers
Cladding
Construction
Conversion
Erbium-doped fiber amplifier
Fibers
L-band
Laser excitation
Laser noise
Optical amplifiers
Power amplifiers
Power generation
Power lasers
Pump lasers
Pumps
Spontaneous emission
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Summary:Propagation of amplified spontaneous emission (ASE) in cladding-pumped long-wavelength-band erbium-doped fiber amplifiers (EDFAs) is analyzed numerically. Forward and backward ASE power dependence on cladding area is analyzed for both pumping directions. ASE power propagating counterdirectionally to the pump is found to experience strong dependence on the cladding area. Increasing the cladding area results in more uniform pump distribution along the EDF, preventing short-wavelength gain and ASE buildup. Quantum conversion efficiency in cladding-pumped L-band EDFAs is discussed.
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ISSN:1041-1135
1941-0174
DOI:10.1109/68.903208