Simultaneous strain, temperature and vibration measurement using a multiplexed FBG/FFPI sensor system

Rao, Y.J. and Henderson, P.J. and Jackson, D.A. and Zhang, L.S. and Bennion, I. (1998) Simultaneous strain, temperature and vibration measurement using a multiplexed FBG/FFPI sensor system. In: SPIE Conference on Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, March 02-04, 1998, San Diego, Ca. (The full text of this publication is not available from this repository)

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Abstract

A novel technique for simultaneous measurement of static-strain, temperature and vibration for structural health monitoring is demonstrated using a wavelength-multiplexed in-fibre-Bragg-grating (FBG)/fibre-Fabry-Perot-interferometer (FFPI) sensor system, which combines the advantages of both FBGs and fibre-optic low-coherence interferometry. An experimental system, including two Im long FFPIs with central wavelengths of 1531nm and 1534nm and a FBG with a central wavelength of 1555nm, is demonstrated. A static strain resolution of better than 1 mu epsilon, over a range of 5m epsilon, a temperature sensitivity of 0.1 degrees C and a vibration amplitude sensitivity of better than 1nm/root Hz have been obtained. The system cross-talk measured is less than -50dB.

Item Type: Conference or workshop item (Paper)
Additional information: Proceedings paper
Uncontrolled keywords: optical fibre sensors; interferometry; in-fibre Bragg gratings; strain gauges
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK8300 Optoelectronic devices
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics (see also: telecommunications)
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: Tara Puri
Date Deposited: 07 Jul 2009 10:58
Last Modified: 07 Jul 2009 11:13
Resource URI: http://kar.kent.ac.uk/id/eprint/17013 (The current URI for this page, for reference purposes)
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