Combined time and wavelength multiplexing technique of optical fiber grating sensor arrays using commercial OTDR equipment

Author

Valente, Luiz Carlos Guedes ; Braga, A.M.B. ; Ribeiro, Alexandre Sant Anna ; Regazzi, Rogério Dias ; Ecke, Wolfgang ; Chojetzki, Christoph ; Willsch, R.

Author_Institution

Dept. of Mech. Eng., Pontificia Univ. Catolica do Rio de Janeiro, Brazil

Volume

3

Issue

1

fYear

2003

Firstpage

31

Lastpage

35

Abstract

The use of a commercial optical time domain reflectometry device for simultaneous wavelength and time domain multiplexing of fiber-optic Bragg grating sensors is proposed and demonstrated. The realization of such systems provides an inexpensive way of interrogating several hundreds of sensors in a single fiber. Strain resolution of 30 μm/m over a strain measuring range of 0.5% was obtained.

Keywords

Bragg gratings; fibre optic sensors; optical time-domain reflectometry; strain sensors; temperature sensors; time division multiplexing; wavelength division multiplexing; Bragg grating sensors; OTDR equipment; optical fiber grating sensor arrays; strain measuring range; strain resolution; temperature measurement; time multiplexing technique; wavelength multiplexing technique; Fiber gratings; Multiplexing equipment; Optical arrays; Optical devices; Optical fiber devices; Optical fiber sensors; Optical fibers; Optical sensors; Sensor arrays; Strain measurement;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2003.810106

Filename

1194391