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


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).

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Description/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

Item Type: Article
Additional Information:
ISSNs: 0146-9592
Related URLs:
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 77931
Date Deposited: 11 Mar 2010
Last Modified: 27 Mar 2014 18:58
URI: http://eprints.soton.ac.uk/id/eprint/77931

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