Combined time and wavelength multiplexing technique of optical fiber grating sensor arrays using commercial OTDR equipment |
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| Authors: | Valente LCG Braga AMB Ribeiro AS Regazzi RD Ecke W Chojetzki C Willsch R |
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| Affiliation: | Dept. of Mech. Eng., Pontificia Univ. Catolica do Rio de Janeiro, Brazil; |
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| 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 /spl mu/m/m over a strain measuring range of 0.5% was obtained. |
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