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Signal to noise and range enhancement of a Brillouin intensity based temperature sensor

Signal to noise and range enhancement of a Brillouin intensity based temperature sensor
Signal to noise and range enhancement of a Brillouin intensity based temperature sensor
We report on the theory and use of pre-amplification to enhance the measurement range of a spontaneous Brillouin intensity based distributed fiber-optic sensor. One factor that limits temperature resolution is receiver sensitivity, which degrades for long range sensors. Using optical preamplification before photo detection in a 23km sensor improved the signal-to-noise by approximately 17dB using a 20MHz detector. The major source of noise was amplified spontaneous emission beat noise.
1094-4087
2656-2661
de Souza, K.
03fbf873-6edf-490a-b884-7c7c5dcb058e
Newson, Trevor
6735857e-d947-45ec-8163-54ebb25daad7
de Souza, K.
03fbf873-6edf-490a-b884-7c7c5dcb058e
Newson, Trevor
6735857e-d947-45ec-8163-54ebb25daad7

de Souza, K. and Newson, Trevor (2004) Signal to noise and range enhancement of a Brillouin intensity based temperature sensor. Optics Express, 12 (12), 2656-2661. (doi:10.1364/OPEX.12.002656).

Record type: Article

Abstract

We report on the theory and use of pre-amplification to enhance the measurement range of a spontaneous Brillouin intensity based distributed fiber-optic sensor. One factor that limits temperature resolution is receiver sensitivity, which degrades for long range sensors. Using optical preamplification before photo detection in a 23km sensor improved the signal-to-noise by approximately 17dB using a 20MHz detector. The major source of noise was amplified spontaneous emission beat noise.

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Published date: 2004

Identifiers

Local EPrints ID: 9473
URI: http://eprints.soton.ac.uk/id/eprint/9473
ISSN: 1094-4087
PURE UUID: e85a2fca-8fd6-484c-a8e5-2b54f411b44e

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Date deposited: 24 Sep 2004
Last modified: 15 Jul 2019 19:37

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