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Theoretical modelling of erbium doped fibre amplifiers with excited state absorption

Theoretical modelling of erbium doped fibre amplifiers with excited state absorption
Theoretical modelling of erbium doped fibre amplifiers with excited state absorption
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.
0146-9592
1062-1064
Morkel, P.R.
51a7c599-5f6a-4b31-81ee-1de7b09ee0de
Laming, R.I.
c86f359b-9145-4148-bc7d-ae4f3d272ca2
Morkel, P.R.
51a7c599-5f6a-4b31-81ee-1de7b09ee0de
Laming, R.I.
c86f359b-9145-4148-bc7d-ae4f3d272ca2

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).

Record type: Article

Abstract

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.

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Published date: 1989
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Local EPrints ID: 78445
URI: http://eprints.soton.ac.uk/id/eprint/78445
DOI: doi:10.1364/OL.14.001062
ISSN: 0146-9592
PURE UUID: fc17a5da-1c7f-4a2a-87a1-0186631d7649

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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 00:14

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Author: P.R. Morkel
Author: R.I. Laming

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