Recent developments in optical fibre sensing using fibre Bragg gratings

G.P. Brady; Kyriacos Kalli; David J. Webb; David A. Jackson; Lin Zhang; Ian Bennion

doi:10.1117/12.255350

Recent developments in optical fibre sensing using fibre Bragg gratings

G.P. Brady, Kyriacos Kalli, David J. Webb, David A. Jackson, Lin Zhang, Ian Bennion

Aston Institute of Photonic Technologies (AiPT)

Research output: Chapter in Book/Published conference output › Conference publication

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.

Original language	English
Title of host publication	Fiber Optic and Laser Sensors XIV
Editors	Ramon P. DePaula, John W. Berthold
Publisher	SPIE
Number of pages	12
ISBN (Print)	978-0-8194-2227-9
DOIs	https://doi.org/10.1117/12.255350
Publication status	Published - 25 Oct 1996
Event	Fiber Optic and Laser Sensors XIV - Denver, United States Duration: 4 Aug 1996 → …

Publication series

Name	SPIE Proceedings
Publisher	SPIE
Volume	2893
ISSN (Print)	0277-786X

Conference

Conference	Fiber Optic and Laser Sensors XIV
Country/Territory	United States
City	Denver
Period	4/08/96 → …

Bibliographical note

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.

http://dx.doi.org/10.1117/12.255350

Keywords

optical fibre sensing
bragg grating
temperature
strain
low coherence
dual wavelength

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10.1117/12.255350

Recent developments in optical fibre sensing using fibre Bragg gratings
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. http://dx.doi.org/10.1117/12.255350
Final published version, 711 KBLicence: CC BY 3.0

Cite this

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title = "Recent developments in optical fibre sensing using fibre Bragg gratings",

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.",

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PY - 1996/10/25

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N2 - 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.

AB - 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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KW - bragg grating

KW - temperature

KW - strain

KW - low coherence

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Recent developments in optical fibre sensing using fibre Bragg gratings

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