Performance comparison between Raman and Brillouin intensity based sub metre spatial resolution temperature compensated distributed strain sensor
Performance comparison between Raman and Brillouin intensity based sub metre spatial resolution temperature compensated distributed strain sensor
With the capability of Brillouin Optical Correlation Domain Analysis (BOCDA) technique to probe measurands with millimeter order spatial resolution [1], the idea of combining intensity measurements with BOCDA for high spatial resolution temperature compensated distributed strain sensing has been explored and successfully demonstrated [2, 3]. This paper discusses the advantages of achieving this temperature compensation using Raman [2] or Brillouin intensity measurements [3]. Fig. 1 shows a summary of temperature compensation strain measurements made using Raman/Brillouin intensity in combination with Brillouin frequency based BOCDA. The 131m long sensing fibre comprised a 42m unheated-unstrained section, 14.5m of unstrained section maintained at 52°C, 33m unheated-unstrained section, 3.5m unheated section subject to 1044 µ.epsilon over a fibre strain rig and 38m unheated-unstrained section of standard single mode telecommunications fibre.
Belal, Mohammad
33550de9-0df1-4c90-bae6-3eb65c62778a
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7
2011
Belal, Mohammad
33550de9-0df1-4c90-bae6-3eb65c62778a
Newson, Trevor P.
6735857e-d947-45ec-8163-54ebb25daad7
Belal, Mohammad and Newson, Trevor P.
(2011)
Performance comparison between Raman and Brillouin intensity based sub metre spatial resolution temperature compensated distributed strain sensor.
European Conference on Lasers and Electro-Optics, Munich, Germany.
22 - 26 May 2011.
1 pp
.
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Conference or Workshop Item
(Paper)
Abstract
With the capability of Brillouin Optical Correlation Domain Analysis (BOCDA) technique to probe measurands with millimeter order spatial resolution [1], the idea of combining intensity measurements with BOCDA for high spatial resolution temperature compensated distributed strain sensing has been explored and successfully demonstrated [2, 3]. This paper discusses the advantages of achieving this temperature compensation using Raman [2] or Brillouin intensity measurements [3]. Fig. 1 shows a summary of temperature compensation strain measurements made using Raman/Brillouin intensity in combination with Brillouin frequency based BOCDA. The 131m long sensing fibre comprised a 42m unheated-unstrained section, 14.5m of unstrained section maintained at 52°C, 33m unheated-unstrained section, 3.5m unheated section subject to 1044 µ.epsilon over a fibre strain rig and 38m unheated-unstrained section of standard single mode telecommunications fibre.
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Published date: 2011
Additional Information:
CH.P.2
Venue - Dates:
European Conference on Lasers and Electro-Optics, Munich, Germany, 2011-05-22 - 2011-05-26
Organisations:
Optoelectronics Research Centre, Physics & Astronomy, Engineering Science Unit
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Local EPrints ID: 341457
URI: http://eprints.soton.ac.uk/id/eprint/341457
PURE UUID: 5f2a1e63-a194-47d8-9f26-7a7f77ef1551
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Date deposited: 25 Jul 2012 11:24
Last modified: 20 Jul 2019 00:49
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