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Titolo:
Short-scan interferometric interrogation and multiplexing of fibre Bragg grating sensors
Autore:
Flavin, DA; McBride, R; Jones, JDC;
Indirizzi:
Waterford Inst Technol, Dept Phys & Quantitat Sci, Waterford, Ireland Waterford Inst Technol Waterford Ireland ntitat Sci, Waterford, Ireland Heriot Watt Univ, Dept Mech & Chem Engn, Edinburgh EH14 4AS, Midlothian, Scotland Heriot Watt Univ Edinburgh Midlothian Scotland EH14 4AS lothian, Scotland Heriot Watt Univ, Dept Phys, Edinburgh EH14 4AS, Midlothian, Scotland Heriot Watt Univ Edinburgh Midlothian Scotland EH14 4AS lothian, Scotland
Titolo Testata:
OPTICS COMMUNICATIONS
fascicolo: 4-6, volume: 170, anno: 1999,
pagine: 347 - 353
SICI:
0030-4018(19991101)170:4-6<347:SIIAMO>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Keywords:
fibre Bragg gratings; optical fibre sensing; multiplexing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
--discip_EC--
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Flavin, DA Waterford Inst Technol, Dept Phys & Quantitat Sci, Waterford, Ireland Waterford Inst Technol Waterford Ireland Waterford, Ireland
Citazione:
D.A. Flavin et al., "Short-scan interferometric interrogation and multiplexing of fibre Bragg grating sensors", OPT COMMUN, 170(4-6), 1999, pp. 347-353

Abstract

We describe an interferometric technique for the demodulation of serial fibre Bragg grating sensor arrays, yielding absolute measurement of the individual grating mean wavelengths. The composite beam reflected from the arrayilluminates a scanning Michelson interferometer but, in contrast to spectral measurement by Fourier Transform Spectroscopy, our technique requires anOPD scan far shorter than the coherence length of the grating reflections. The technique is based on the high-resolution measurement of the phases ofthe complex analytic signals and of the relationship of these phases to interferometric delay. The analytic signals are derived via the Hilbert transform, allowing frequency domain filtering of individual signals within the signal processing. The technique has yielded a resolution of 0.007 nm for an OPD scan of 1.2 mm. (C) 1999 Elsevier Science B.V. All rights reserved.

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Documento generato il 30/11/20 alle ore 15:19:58