Dynamic compensation of transient gain saturation in erbium-doped fiber amplifiers by pump feedback control

Dynamic compensation of transient gain saturation in erbium-doped fiber amplifiers by pump feedback control

Dynamic compensation of transient gain saturation in erbium-doped fiber amplifiers by pump feedback control is investigated both theoretically and experimentally. It is shown by the theoretical analysis that the gain saturation of 10 dB can be suppressed to less than 0.3 dB if moderately high pump p...

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Bibliographic Details
Published in:IEEE photonics technology letters Vol. 5; no. 12; pp. 1423 - 1426
Main Authors: Motoshima, K., Leba, L.M., Chen, D.N., Downs, M.M., Li, T., Desurvire, E.
Format: Journal Article
Language:English
Published: New York, NY IEEE 01-12-1993
Institute of Electrical and Electronics Engineers
Subjects:
Absorption
Equations
Erbium-doped fiber amplifier
Exact sciences and technology
Feedback control
Feedback loop
Fundamental areas of phenomenology (including applications)
Laser optical systems: design and operation
Optical amplifiers
Optical crosstalk
Optics
Physics
Probes
Resonators, cavities, amplifiers, arrays, and rings
Stimulated emission
Wavelength division multiplexing
Optical fibers
Saturation
Theoretical study
Doped materials
Optics
Amplifiers
Experimental study
Erbium additions
Gain
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Summary:Dynamic compensation of transient gain saturation in erbium-doped fiber amplifiers by pump feedback control is investigated both theoretically and experimentally. It is shown by the theoretical analysis that the gain saturation of 10 dB can be suppressed to less than 0.3 dB if moderately high pump power of 140 mW is available. Furthermore, the required response time of the feedback loop is as slow as 0.5 mu s, which is easily implemented by inexpensive electronics. It is demonstrated experimentally that the transient gain saturation of 3 dB is reduced to 0.3 dB, corresponding to a 10-dB extension of the linear dynamic range of the amplifier.< >
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1041-1135
1941-0174
DOI:10.1109/68.262563