The use of Bragg gratings in the core and cladding of optical fibres for accurate strain sensing

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 applications.