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Optical signal to noise enhancement of a single-ended Brillouin intensity based distributed temperature sensor

Optical signal to noise enhancement of a single-ended Brillouin intensity based distributed temperature sensor
Optical signal to noise enhancement of a single-ended Brillouin intensity based distributed temperature sensor
An optical preamplifier system consisting of a 27dB-gain erbium-doped fiber amplifier, a three-port circulator and a 47GHz bandwidth in-fiber grating has improved receiver sensitivity and consequently sensor range of a spontaneous Brillouin-based fiber-optic distributed temperature single-ended sensor. Optical signal-to-noise has improved by 17dB. Using this system and operating at 1533nm, a sensor with a range of 23km, spatial resolution of 1.8m, measurement time of 9 minutes and temperature resolution of 6K was implemented. The temperature resolution was attributed to contamination of the backscattered spontaneous Brillouin signal by the residual Rayleigh signal after optical filtering. The optical signal-to-noise is supported theoretically by considering associated noise sources.
0819455334
de Souza, Keith P.
303d309a-efdb-4917-998b-3d399845bb86
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7
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) Optical signal to noise enhancement of a single-ended Brillouin intensity based distributed temperature sensor. SPIE Photonics North 2004: Photonic Applications in Telecommunications, Sensors, Software, and Lasers. 27 - 29 Sep 2004. (doi:10.1117/12.567488).

Record type: Conference or Workshop Item (Paper)

Abstract

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

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e-pub ahead of print date: 2004
Venue - Dates: SPIE Photonics North 2004: Photonic Applications in Telecommunications, Sensors, Software, and Lasers, 2004-09-27 - 2004-09-29

Identifiers

Local EPrints ID: 41687
URI: http://eprints.soton.ac.uk/id/eprint/41687
ISBN: 0819455334
PURE UUID: b7543d3c-4f15-4753-a0a0-747c9619933d

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Date deposited: 23 Oct 2006
Last modified: 15 Jul 2019 18:57

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Author: Keith P. de Souza

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