Combined spatial- and time-division-multiplexing scheme for fiber grating sensors with drift-compensated phase-sensitive detection

A combined spatial- and time-division-multiplexing topology with drift-compensated high-resolution wavelength-shift detection is reported for fiber Bragg grating sensors. An eight-element grating sensor array is demonstrated based on this topology. A resolution of ~1.2 microepsilon over a range of ~...

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Bibliographic Details
Published in:Optics letters 1995-10, Vol.20 (20), p.2149-2151
Main Authors: Rao, Y J, Ribeiro, A B, Jackson, D A, Zhang, L, Bennion, I
Format: Article
Language:English
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Summary:A combined spatial- and time-division-multiplexing topology with drift-compensated high-resolution wavelength-shift detection is reported for fiber Bragg grating sensors. An eight-element grating sensor array is demonstrated based on this topology. A resolution of ~1.2 microepsilon over a range of ~1.5 mepsilon with a measurement bandwidth of 30 Hz (~0.22 microepsilon/ radicalHz) has been achieved for quasi-static strain measurement.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.20.002149