Recent developments in optical fibre sensing using fibre Bragg gratings


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.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: G. P. Brady ; Kyriacos Kalli ; David J. Webb ; David A. Jackson ; Lin Zhang and Ian Bennion "Recent developments in optical fiber sensing using fiber Bragg gratings", Proc. SPIE 2839, Fiber Optic and Laser Sensors XIV, 8 (October 25, 1996); Copyright 1996 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Event Title: Fiber Optic and Laser Sensors XIV
Event Type: Other
Event Dates: 1996-08-04
Uncontrolled Keywords: optical fibre sensing,bragg grating,temperature,strain,low coherence,dual wavelength
ISBN: 978-0-8194-2227-9
Last Modified: 08 Apr 2024 07:35
Date Deposited: 20 Mar 2019 10:26
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Related URLs: ... 899&start_at=21 (Publisher URL)
PURE Output Type: Conference contribution
Published Date: 1996-10-25
Authors: Brady, G.P.
Kalli, Kyriacos
Webb, David J. (ORCID Profile 0000-0002-5495-1296)
Jackson, David A.
Zhang, Lin (ORCID Profile 0000-0002-1691-5577)
Bennion, Ian



Version: Published Version

License: Creative Commons Attribution

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