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Experimental evidence of differences in the absorption spectra of clustered and isolated ions in erbium doped fibers

Experimental evidence of differences in the absorption spectra of clustered and isolated ions in erbium doped fibers
Experimental evidence of differences in the absorption spectra of clustered and isolated ions in erbium doped fibers
The absorption spectra of clustered and isolated ions in erbium-doped germanosilicate fibers have been experimentally studied. The ground state absorption spectra broaden as the degree of erbium-ion clustering increases, indicating that the absorption spectra of clustered ions is significantly different from that of the homogeneous ions. This is confirmed by comparing the broadened absorption spectra with the fibre unbleachable loss spectrum; a direct measurement of the clustered ions. This is the first experimental evidence indicating different absorption cross-sections for the two species of ions in germanosilicate glass, an assumption used in the theoretical description of self-pulsing in erbium doped fiber lasers, but in direct contradiction to the pair-induced quenching model widely used to characterise EDFAs.
0146-9592
1763-1765
Samson, B.N.
0e9f1440-04ab-4aad-994f-554d24a3a419
Loh, W.H.
ad865cd3-2580-4afa-8607-1c1d30cf8312
de Sandro, J.P.
1577a28a-db8b-4bae-97af-c7dc8b23cea6
Samson, B.N.
0e9f1440-04ab-4aad-994f-554d24a3a419
Loh, W.H.
ad865cd3-2580-4afa-8607-1c1d30cf8312
de Sandro, J.P.
1577a28a-db8b-4bae-97af-c7dc8b23cea6

Samson, B.N., Loh, W.H. and de Sandro, J.P. (1997) Experimental evidence of differences in the absorption spectra of clustered and isolated ions in erbium doped fibers. Optics Letters, 22 (23), 1763-1765. (doi:10.1364/OL.22.001763).

Record type: Article

Abstract

The absorption spectra of clustered and isolated ions in erbium-doped germanosilicate fibers have been experimentally studied. The ground state absorption spectra broaden as the degree of erbium-ion clustering increases, indicating that the absorption spectra of clustered ions is significantly different from that of the homogeneous ions. This is confirmed by comparing the broadened absorption spectra with the fibre unbleachable loss spectrum; a direct measurement of the clustered ions. This is the first experimental evidence indicating different absorption cross-sections for the two species of ions in germanosilicate glass, an assumption used in the theoretical description of self-pulsing in erbium doped fiber lasers, but in direct contradiction to the pair-induced quenching model widely used to characterise EDFAs.

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Published date: 1997

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Local EPrints ID: 77931
URI: http://eprints.soton.ac.uk/id/eprint/77931
ISSN: 0146-9592
PURE UUID: 6d28268a-4da3-4529-b884-2165031e65bd

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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 00:02

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Contributors

Author: B.N. Samson
Author: W.H. Loh
Author: J.P. de Sandro

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