Title :
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
fDate :
3/1/2006 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.863323
