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Recent developments in optical fibre sensing using fibre Bragg gratings

Brady, G.P. and Kalli, Kyriacos and Webb, David J. and Jackson, David A. and Zhang, Lin and Bennion, Ian (1996) Recent developments in optical fibre sensing using fibre Bragg gratings. In: DePaula, Ramon P. and Berthold, John W., eds. Fiber Optic and Laser Sensors XIV. Proceedings of SPIE . SPIE, pp. 8-19. ISBN 0-8194-2227-4. (doi:10.1117/12.255350) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1117/12.255350

Abstract

We report on recent work on sensing using in-fiber Bragg gratings carried out in our laboratory. First, an alternative method of discriminating between temperature and strain effects using a conventionally written, in-fiber Bragg grating is presented. The technique uses wavelength information from the first and second diffraction orders of the grating element to determine the wavelength dependent strain and temperature coefficients, from which independent temperature and strain measurements can be made. Secondly, we describe an all-fiber, passive scheme for making extended range interferometric measurements based on the dual wavelength technique. A coherence turned interferometer network is illuminated with a single superfluorescent fiber source at 1.55 mm and the two wavelengths are synthesized at the output by means of chirped fiber Bragg gratings.

Item Type: Book section
DOI/Identification number: 10.1117/12.255350
Uncontrolled keywords: optical fibre sensing; Bragg grating; temperature; strain; low coherence; dual wavelength
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: M.A. Ziai
Date Deposited: 16 May 2009 05:12 UTC
Last Modified: 08 Aug 2019 10:19 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/18843 (The current URI for this page, for reference purposes)
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