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Improvement of signal-to-noise capabilities of a distributed temperature sensor using optical preamplification

Improvement of signal-to-noise capabilities of a distributed temperature sensor using optical preamplification
Improvement of signal-to-noise capabilities of a distributed temperature sensor using optical preamplification
An optical preamplifier system consisting of a 27 dB-gain erbium-doped fibre amplifier, a three-port circulator and a 47 GHz bandwidth in-fibre grating has improved the optical signal-to-noise capabilities of a Brillouin-based fibre-optic distributed temperature sensor by 17 dB. Using this system and operating at 1533 nm, a sensor with a range of 23 km, spatial resolution of 1.8 m, measurement time of 9 min and temperature resolution of 6 K was implemented. The temperature resolution was attributed to contamination of the backscattered spontaneous Brillouin signal by the residual Rayleigh signal after optical filtering.
0957-0233
952-957
de Souza, K.
03fbf873-6edf-490a-b884-7c7c5dcb058e
Newson, T.P.
6735857e-d947-45ec-8163-54ebb25daad7
de Souza, K.
03fbf873-6edf-490a-b884-7c7c5dcb058e
Newson, T.P.
6735857e-d947-45ec-8163-54ebb25daad7

de Souza, K. and Newson, T.P. (2001) Improvement of signal-to-noise capabilities of a distributed temperature sensor using optical preamplification. Measurement Science and Technology, 12 (7), 952-957. (doi:10.1088/0957-0233/12/7/336).

Record type: Article

Abstract

An optical preamplifier system consisting of a 27 dB-gain erbium-doped fibre amplifier, a three-port circulator and a 47 GHz bandwidth in-fibre grating has improved the optical signal-to-noise capabilities of a Brillouin-based fibre-optic distributed temperature sensor by 17 dB. Using this system and operating at 1533 nm, a sensor with a range of 23 km, spatial resolution of 1.8 m, measurement time of 9 min and temperature resolution of 6 K was implemented. The temperature resolution was attributed to contamination of the backscattered spontaneous Brillouin signal by the residual Rayleigh signal after optical filtering.

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Published date: 2001
Organisations: Optoelectronics Research Centre

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Local EPrints ID: 13685
URI: http://eprints.soton.ac.uk/id/eprint/13685
ISSN: 0957-0233
PURE UUID: d9d6465b-4455-4fe3-be2b-e509bb641e86

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Date deposited: 13 Jan 2005
Last modified: 08 Jan 2022 03:43

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Contributors

Author: K. de Souza
Author: T.P. Newson

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