Strain-sensing system based on carrier-modulated gratings for the monitoring of a large number of channels

Author

Childs, Paul ; Wong, Allan C L ; Peng, Gang Ding

Author_Institution

Sch. of Electr. Eng., Univ. of New South Wales, Sydney, NSW

Volume

24

Issue

3

fYear

2006

fDate

3/1/2006 12:00:00 AM

Firstpage

1388

Lastpage

1394

Abstract

The performance of a strain sensor system based on the use of carrier-modulated gratings and Fourier-domain decoding is analyzed. For three sensors, Young´s modulus is measured as 69.98 plusmn 0.27, 69.15 plusmn 0.81, and 70.65 plusmn 0.58 GPa. Crosstalk is shown to exist only when two sensors are designed with an overlap of the carrier band in the Fourier domain. Improving the data processing shows it is possible to limit this crosstalk to a value below that of the system error

Keywords

Young´s modulus; decoding; diffraction gratings; fibre optic sensors; optical crosstalk; strain sensors; 69.15 GPa; 69.98 GPa; 70.65 GPa; Fourier domain; Fourier-domain decoding; Young modulus; carrier-modulated gratings; channel monitoring; crosstalk; data processing; fiber-optic-sensing systems; strain-sensing system; system error; Bragg gratings; Capacitive sensors; Fiber gratings; Intelligent sensors; Monitoring; Optical fiber sensors; Optical interferometry; Optical sensors; Sensor systems; Wavelength division multiplexing; Gratings; harmonic analysis; optical fiber sensors; strain sensor;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2005.863323

Filename

1605341