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Bragg gratings interrogating system using MEMS and optical circuits

Bragg gratings interrogating system using MEMS and optical circuits
Bragg gratings interrogating system using MEMS and optical circuits
It is well documented that optical sensors offer many advantages over conventional electronic devices for some applications because they are more versatile,lighter,smaller,immune to electrical interference and can be densely multiplexed. However, to date, many optical sensor instrument systems have been insufficiently robust for use in harsh environments and relatively expensive due to the use of discrete optical components. Hence the primary aim of this work is to develop a physically robust and cost effective interrogation system for fibre Bragg grating strain sensors by integrating a system on a silicon chip. Therefore it will be possible to replace many of the costly discrete components. Related improvements will be the reduction of size and weight,an increase in robustness, and performance in relatively harsh environments. This work will focus on the development of a Micro Electro Mechanical System (MEMS) tunable Fabry-Perot optical filter, together with integrated optical circuit fabricated on silicon-on-insulator (SOI) to deliver the signal to the Bragg gratings and to detectors based in the same optical circuit. In this paper we discuss the requirements for integration, as well as reviewing the principles of strain measurement using fibre Bragg gratings. The latter will include a brief discussion of the merits of multiplexing via single or multiple fibres.
232-241
Ang, M
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Reed, G.T.
ca08dd60-c072-4d7d-b254-75714d570139
Ensell, G.
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Evans, A.
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Foote, P.
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Pritchard, A.
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Barber, D.
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Ang, M
ac2585c4-e5b9-42a5-9f8e-9a7839702ba3
Reed, G.T.
ca08dd60-c072-4d7d-b254-75714d570139
Ensell, G.
48fe0996-1c6b-4816-8bd0-0a3234d36ae8
Evans, A.
1cfe5902-0508-4a86-bbe2-72aa3a927f1a
Foote, P.
7a9fdbd7-13b3-459f-aa60-c8436499ea4c
Pritchard, A.
97794316-fc2a-474a-bd35-097508b69c97
Barber, D.
6e6216e9-a961-4c71-90e4-4a195a05a09b

Ang, M, Reed, G.T., Ensell, G., Evans, A., Foote, P., Pritchard, A. and Barber, D. (2003) Bragg gratings interrogating system using MEMS and optical circuits. SPIE, United States. 25 - 31 Jan 2003. pp. 232-241 .

Record type: Conference or Workshop Item (Paper)

Abstract

It is well documented that optical sensors offer many advantages over conventional electronic devices for some applications because they are more versatile,lighter,smaller,immune to electrical interference and can be densely multiplexed. However, to date, many optical sensor instrument systems have been insufficiently robust for use in harsh environments and relatively expensive due to the use of discrete optical components. Hence the primary aim of this work is to develop a physically robust and cost effective interrogation system for fibre Bragg grating strain sensors by integrating a system on a silicon chip. Therefore it will be possible to replace many of the costly discrete components. Related improvements will be the reduction of size and weight,an increase in robustness, and performance in relatively harsh environments. This work will focus on the development of a Micro Electro Mechanical System (MEMS) tunable Fabry-Perot optical filter, together with integrated optical circuit fabricated on silicon-on-insulator (SOI) to deliver the signal to the Bragg gratings and to detectors based in the same optical circuit. In this paper we discuss the requirements for integration, as well as reviewing the principles of strain measurement using fibre Bragg gratings. The latter will include a brief discussion of the merits of multiplexing via single or multiple fibres.

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More information

Published date: 2003
Venue - Dates: SPIE, United States, 2003-01-25 - 2003-01-31
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 260467
URI: https://eprints.soton.ac.uk/id/eprint/260467
PURE UUID: 5d2aa2d2-b24b-40a4-ac0e-33b86cbc7b24

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Date deposited: 07 Feb 2005
Last modified: 18 Jul 2017 09:13

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Contributors

Author: M Ang
Author: G.T. Reed
Author: G. Ensell
Author: A. Evans
Author: P. Foote
Author: A. Pritchard
Author: D. Barber

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