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A Dual Grating Fiber Sensor to Discriminate Axial and Radial Strains

Authors:
Romain Guyard
Dominique Leduc
Yann Lecieux
Cyril Lupi

Keywords: Strain; Embedded sensors; optical fiber gratings

Abstract:
When a fiber Bragg grating strain sensor is embedded inside a structure, the interaction of the sensor with the host material can lead to spurious results if the radial strain is neglected. In this article, we use numerical simulations to show that the axial and radial strains can be simultaneously measured with a single fiber in which a Bragg grating and a long period grating are superimposed. Moreover, we present an optimal architecture of the sensor.

Pages: 63 to 68

Copyright: Copyright (c) IARIA, 2015

Publication date: August 23, 2015

Published in: conference

ISSN: 2308-3514

ISBN: 978-1-61208-426-8

Location: Venice, Italy

Dates: from August 23, 2015 to August 28, 2015