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Effects of high temperature and pressure on silica optical fibre sensors

Effects of high temperature and pressure on silica optical fibre sensors
Effects of high temperature and pressure on silica optical fibre sensors
We report on the effects of liquids at high temperature and pressure on silica optical fibres, sensors and gratings. We propose that the diffusion of molecules into the silica and the resultant expansion of the network are responsible for observed fibre expansions of up to 0.2% and Bragg wavelength increases of 2nm at 1525nm. Amorphous carbon hermetic coating has shown a reduction of these effects by an order of magnitude at 300°C. These results have strong implications for the deployment of fibre sensors in oil wells.
1041-1135
403-405
Clowes, J.R.
e0038fc5-6a30-4f9f-8d50-82a14ec94a0d
McInnes, J.
006092d0-4568-407c-98d6-69527de7a3f5
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Clowes, J.R.
e0038fc5-6a30-4f9f-8d50-82a14ec94a0d
McInnes, J.
006092d0-4568-407c-98d6-69527de7a3f5
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d

Clowes, J.R., McInnes, J., Zervas, M.N. and Payne, D.N. (1998) Effects of high temperature and pressure on silica optical fibre sensors. IEEE Photonics Technology Letters, 10 (3), 403-405. (doi:10.1109/68.661424).

Record type: Article

Abstract

We report on the effects of liquids at high temperature and pressure on silica optical fibres, sensors and gratings. We propose that the diffusion of molecules into the silica and the resultant expansion of the network are responsible for observed fibre expansions of up to 0.2% and Bragg wavelength increases of 2nm at 1525nm. Amorphous carbon hermetic coating has shown a reduction of these effects by an order of magnitude at 300°C. These results have strong implications for the deployment of fibre sensors in oil wells.

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Published date: March 1998

Identifiers

Local EPrints ID: 77945
URI: https://eprints.soton.ac.uk/id/eprint/77945
ISSN: 1041-1135
PURE UUID: 002087c6-82f7-4dfa-bad9-c3eb50bb6709
ORCID for M.N. Zervas: ORCID iD orcid.org/0000-0002-0651-4059

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Date deposited: 11 Mar 2010
Last modified: 02 Oct 2018 00:37

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