Quantum efficiency of praseodymium-doped Ga:La:S glass for 1.3µm optical fibre amplifiers
Quantum efficiency of praseodymium-doped Ga:La:S glass for 1.3µm optical fibre amplifiers
The gain of Pr3+-doped ZBLAN fibre amplifiers is hindered by a poor quantum efficiency due mainly to a high rate of multiphonon decay. Sulphide-based glasses ameliorate this problem through a higher radiative rate and lower non-radiative rate. In this letter, Pr3+-doped Ga:La:S glass has been evaluated spectroscopically in bulk and fibre form for its quantum-efficiency at 1.3 microns. Measurements reveal that absorption bands are broadened and the effective separation between the 1G4 and 3F4 level is reduced compared to ZBLAN glass. Judd-Ofelt analysis and the theory of multiphonon-decay now predict efficiencies of 80%, while 58% is measured. Oxide impurities are shown to play a key role in quenching of the radiative emission.
609-612
Hewak, D.W.
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Medeiros-Neto, J.A.
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Samson, B.N.
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Brown, R.S.
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Jedrzejewski, K.P.
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Wang, J.
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Taylor, E.R.
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Laming, R.I.
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Wylangowski, G.
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Payne, D.N.
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May 1994
Hewak, D.W.
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Medeiros-Neto, J.A.
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Samson, B.N.
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Brown, R.S.
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Jedrzejewski, K.P.
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Wang, J.
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Taylor, E.R.
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Laming, R.I.
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Wylangowski, G.
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Payne, D.N.
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Hewak, D.W., Medeiros-Neto, J.A., Samson, B.N., Brown, R.S., Jedrzejewski, K.P., Wang, J., Taylor, E.R., Laming, R.I., Wylangowski, G. and Payne, D.N.
(1994)
Quantum efficiency of praseodymium-doped Ga:La:S glass for 1.3µm optical fibre amplifiers.
IEEE Photonics Technology Letters, 6 (5), .
(doi:10.1109/68.285556).
Abstract
The gain of Pr3+-doped ZBLAN fibre amplifiers is hindered by a poor quantum efficiency due mainly to a high rate of multiphonon decay. Sulphide-based glasses ameliorate this problem through a higher radiative rate and lower non-radiative rate. In this letter, Pr3+-doped Ga:La:S glass has been evaluated spectroscopically in bulk and fibre form for its quantum-efficiency at 1.3 microns. Measurements reveal that absorption bands are broadened and the effective separation between the 1G4 and 3F4 level is reduced compared to ZBLAN glass. Judd-Ofelt analysis and the theory of multiphonon-decay now predict efficiencies of 80%, while 58% is measured. Oxide impurities are shown to play a key role in quenching of the radiative emission.
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Published date: May 1994
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Local EPrints ID: 78276
URI: http://eprints.soton.ac.uk/id/eprint/78276
ISSN: 1041-1135
PURE UUID: 43877dda-5569-4dc4-896a-bbf20f486595
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 00:10
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Author:
J.A. Medeiros-Neto
Author:
B.N. Samson
Author:
R.S. Brown
Author:
K.P. Jedrzejewski
Author:
J. Wang
Author:
E.R. Taylor
Author:
R.I. Laming
Author:
G. Wylangowski
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