"T-shaped" fibre Bragg grating sensor geometry for strain based metrology

Author

Maier, R.R.J. ; Barton, J.S. ; Jones, J.D.C. ; McCulloch, S. ; Burnell, Gavin ; Davis, I.

Author_Institution

Dept. of Phys., Heriot-Watt Univ., Edinburgh, UK

fYear

2002

Firstpage

351

Abstract

This paper describes a "T-shaped" dual fibre optic sensor arrangement with integrated strain amplification for strain sensing. The strain sensor elements are based on optical fibre Bragg gratings (FBG). The sensor structure includes a common mode rejection capability of temperature induced drift. This rejection scheme is also expected to compensate for a change in Bragg wavelength (XB) due to ionising radiation. The operation of this sensor structure is demonstrated in an atmospheric pressure sensor operating in the region of 800 to 1100 mbar.

Keywords

Bragg gratings; atmospheric pressure; compensation; fibre optic sensors; pressure sensors; radiation effects; strain sensors; 800 to 1100 mbar; Bragg wavelength change compensation; T-shaped fibre Bragg grating sensor geometry; atmospheric pressure sensor; common mode temperature induced drift rejection; dual fibre optic sensor; integrated strain amplification; optical fibre Bragg gratings; sensor operating region; sensor structure; strain sensing; strain sensor elements; Bragg gratings; Capacitive sensors; Fiber gratings; Geometrical optics; Geometry; Metrology; Optical fiber sensors; Optical fibers; Optical sensors; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Fiber Sensors Conference Technical Digest, 2002. Ofs 2002, 15th

Conference_Location

Portland, OR, USA

Print_ISBN

0-7803-7289-1

Type

conf

DOI

10.1109/OFS.2002.1000575

Filename

1000575