Enhancing the measurement range of a Brillouin-based fibre optic distributed-temperature sensor by improving receiver sensitivity through optical preamplification
Enhancing the measurement range of a Brillouin-based fibre optic distributed-temperature sensor by improving receiver sensitivity through optical preamplification
We report on the use of a cost-effective erbium-doped based optical preamplifier in a single-ended distributed fiber-optic sensor to improve receiver sensitivity and hence measurement range. The improved accuracy of spontaneous Brillouin measurements was demonstrated in a 23km sensor and was limited by amplified spontaneous emission from the preamplifier, which was verified theoretically. Reduction of amplified spontaneous emission was achieved with a 0.37nm in-fiber Bragg grating. A signal-to-noise improvement of 17dB was achieved and supported by theory, which translates to approximately 40km range improvement for a single-mode sensing fiber having losses of 0.2dB/km at 1550nm.
325-336
de Souza, Keith P.
303d309a-efdb-4917-998b-3d399845bb86
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7
October 2004
de Souza, Keith P.
303d309a-efdb-4917-998b-3d399845bb86
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7
de Souza, Keith P. and Newson, Trevor P.
(2004)
Enhancing the measurement range of a Brillouin-based fibre optic distributed-temperature sensor by improving receiver sensitivity through optical preamplification.
Optics East 2004, Philadelphia, USA.
25 - 28 Oct 2004.
.
(doi:10.1117/12.573259).
Record type:
Conference or Workshop Item
(Paper)
Abstract
We report on the use of a cost-effective erbium-doped based optical preamplifier in a single-ended distributed fiber-optic sensor to improve receiver sensitivity and hence measurement range. The improved accuracy of spontaneous Brillouin measurements was demonstrated in a 23km sensor and was limited by amplified spontaneous emission from the preamplifier, which was verified theoretically. Reduction of amplified spontaneous emission was achieved with a 0.37nm in-fiber Bragg grating. A signal-to-noise improvement of 17dB was achieved and supported by theory, which translates to approximately 40km range improvement for a single-mode sensing fiber having losses of 0.2dB/km at 1550nm.
This record has no associated files available for download.
More information
Published date: October 2004
Venue - Dates:
Optics East 2004, Philadelphia, USA, 2004-10-25 - 2004-10-28
Identifiers
Local EPrints ID: 47899
URI: http://eprints.soton.ac.uk/id/eprint/47899
PURE UUID: b175add6-e387-44ce-98d7-edfe9bb57db2
Catalogue record
Date deposited: 10 Aug 2007
Last modified: 15 Mar 2024 09:40
Export record
Altmetrics
Contributors
Author:
Keith P. de Souza
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics