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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
Quantum efficiency of praseodymium-doped Ga:La:S glass for 1.3µm optical fibre amplifiers
The gain of Pr3+-doped ZBLAN fibre ampliiers 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 quantumefficiency 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.
1041-1135
609-612
Hewak, D.W.
87c80070-c101-4f7a-914f-4cc3131e3db0
Madeiros-Neto, J.A.
eccd281b-2286-4b62-b3c0-63218b70e2cd
Samson, B.N.
0e9f1440-04ab-4aad-994f-554d24a3a419
Brown, R.S.
a617c5b4-9417-4f00-8675-4ce60e757d29
Jedrzejewski, K.P.
c1dbf6fd-ee1f-4225-a6fa-fdfda93718ee
Wang, J.
53d8d8bd-3c17-406e-9acf-961cc86b9a00
Taylor, E.R.
d9a73a87-6abd-4a1e-a462-84549c667d19
Laming, R.I.
c86f359b-9145-4148-bc7d-ae4f3d272ca2
Wylangowski, G.
d2d86d77-5064-44d2-b424-da0195394d55
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Hewak, D.W.
87c80070-c101-4f7a-914f-4cc3131e3db0
Madeiros-Neto, J.A.
eccd281b-2286-4b62-b3c0-63218b70e2cd
Samson, B.N.
0e9f1440-04ab-4aad-994f-554d24a3a419
Brown, R.S.
a617c5b4-9417-4f00-8675-4ce60e757d29
Jedrzejewski, K.P.
c1dbf6fd-ee1f-4225-a6fa-fdfda93718ee
Wang, J.
53d8d8bd-3c17-406e-9acf-961cc86b9a00
Taylor, E.R.
d9a73a87-6abd-4a1e-a462-84549c667d19
Laming, R.I.
c86f359b-9145-4148-bc7d-ae4f3d272ca2
Wylangowski, G.
d2d86d77-5064-44d2-b424-da0195394d55
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d

Hewak, D.W., Madeiros-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), 609-612. (doi:10.1109/68.285556).

Record type: Article

Abstract

The gain of Pr3+-doped ZBLAN fibre ampliiers 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 quantumefficiency 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

Identifiers

Local EPrints ID: 78276
URI: https://eprints.soton.ac.uk/id/eprint/78276
ISSN: 1041-1135
PURE UUID: 43877dda-5569-4dc4-896a-bbf20f486595
ORCID for D.W. Hewak: ORCID iD orcid.org/0000-0002-2093-5773

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Date deposited: 11 Mar 2010
Last modified: 03 Apr 2019 00:37

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