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Special Issue: Modern Sensing Technologies

Vol. 90, April 2008, pp. 333-341

 

 Bullet

The Use of Bragg Gratings in the Core and Cladding of Optical Fibres for Accurate Strain Sensing

 

Ian G. PLATT and Ian M. WOODHEAD

Lincoln Ventures,

PO Box 133, Lincoln, Christchurch 7640, New Zealand,

Tel.: +64 3 325 3748, fax: +64 3 325 3725

E-mail: platti@lvl.co.nz, http://www.lvl.co.nz

 

 

 Received: 15 October 2007   /Accepted: 20 February 2008   /Published: 15 April 2008

 

Abstract: Optical Fibre Sensors (OFS) have many advantages over others type of sensors for measuring strain or micro-displacement. This paper introduces a new configuration of Bragg gratings within an optical fibre to improve strain measurement resolution and accuracy. We describe the geometry, together with the research direction currently being undertaken to produce a commercially viable micro-displacement sensor suitable for a number of architectural and engineering application.

 

Keywords: Optical fibre, Strain, Bragg, Micro-displacement

 

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