Theoretical modelling of erbium doped fibre amplifiers with excited state absorption
Morkel, P.R. and Laming, R.I. (1989) Theoretical modelling of erbium doped fibre amplifiers with excited state absorption. Optics Letters, 14, (19), 1062-1064. (doi:10.1364/OL.14.001062).
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Numerical solution of a general rate-equation model of an erbium-doped fiber amplifier highlights several important features of the device. A difference in strong-signal gain between copropagating and counterpropagating signal pump schemes in the presence of pump excited-state absorption is predicted, and this is confirmed by experiment. The detriment in the noise figure previously associated with counterpropagating schemes for only small-signal conditions is shown to be similar for strong signals, corresponding to a power-amplifier operating regime. In addition, a correction to the noise figure is given for the limit of a low-gain amplifier.
|Digital Object Identifier (DOI):||doi:10.1364/OL.14.001062|
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QC Physics
|Divisions:||University Structure - Pre August 2011 > Optoelectronics Research Centre
|Date Deposited:||11 Mar 2010|
|Last Modified:||27 Mar 2014 18:59|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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