Fiber Optic Distributed Differential Displacement Sensor

Author

Wylie, Michael T V ; Colpitts, Bruce G. ; Brown, Anthony W.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of New Brunswick, Fredericton, NB, Canada

Volume

29

Issue

18

fYear

2011

Firstpage

2847

Lastpage

2852

Abstract

A Fiber Optic Distributed Differential Displacement Sensor (FODDDS) that is temperature insensitive is modelled and experimentally verified to determine shape. Created using a steel tape, 9/125 μm single-mode fiber, and adhesive, the FODDDS can be used to determine the shape or displacement of any object to which it is attached. The sensitivity of the FODDDS, for the substrate thickness used in this experiment, is specified as a maximum measurable radius of curvature of 103 m. The error of the sensor is examined and the sources of this error are examined. The FODDDS is designed around a Brillouin Optical Time-Domain Analysis system, but is compatible with both correlation and frequency domain based systems.

Keywords

adhesives; displacement measurement; distributed sensors; fibre optic sensors; frequency-domain analysis; time-domain analysis; Brillouin optical time-domain analysis; adhesive; correlation; distributed differential displacement sensor; fiber optic sensor; frequency domain; single-mode fiber; steel tape; substrate thickness; temperature insensitive; Scattering; Shape; Spatial resolution; Strain; Substrates; Temperature measurement; Temperature sensors; Brillouin Scattering; displacement measurement; optical fiber sensor; shape sensor; strain measurement;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2011.2165527

Filename

5993485