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Titolo:
DEMODULATION OF POLARIMETRIC OPTICAL-FIBER SENSORS BY DISPERSIVE FOURIER-TRANSFORM SPECTROSCOPY
Autore:
FLAVIN DA; MCBRIDE R; JONES JDC;
Indirizzi:
WATERFORD INST TECHNOL,DEPT PHYS & QUANTITAT SCI WATERFORD IRELAND HERIOT WATT UNIV,DEPT MECH & CHEM ENGN EDINBURGH EH14 4AS MIDLOTHIAN SCOTLAND HERIOT WATT UNIV,DEPT PHYS EDINBURGH EH14 4AS MIDLOTHIAN SCOTLAND
Titolo Testata:
Optics communications
fascicolo: 4-6, volume: 156, anno: 1998,
pagine: 367 - 373
SICI:
0030-4018(1998)156:4-6<367:DOPOSB>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERFEROMETRIC FIBEROPTIC SENSORS; STRAIN SENSOR; FIBERS; DELAY; GAUGE;
Keywords:
OPTICAL FIBER SENSING; POLARIMETRY; LOW-COHERENCE INTERFEROMETRY; HIGHLY BIREFRINGENT FIBER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
D.A. Flavin et al., "DEMODULATION OF POLARIMETRIC OPTICAL-FIBER SENSORS BY DISPERSIVE FOURIER-TRANSFORM SPECTROSCOPY", Optics communications, 156(4-6), 1998, pp. 367-373

Abstract

We describe an interrogation technique for polarimetric optical fibresensors, based on the measurement of the differential group delay between the eigenmodes of the birefringent sensing element by tandem interferometry using a low-coherence source. Measurement of the group delay has the advantage of avoiding the 2 pi rad ambiguity inherent in thephase measurement. This differential group delay is strongly dispersive, inhibiting measurement using central fringe identification. We measure the delay by dispersive Fourier transform spectroscopy, thus avoiding the errors introduced by dispersion. We demonstrate the application of this technique to temperature and strain measurement. (C) 1998 Elsevier Science B.V. All rights reserved.

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Documento generato il 25/11/20 alle ore 07:06:35