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

Rao, Y. J.; Zhang, L.; Bennion, I.; Lobo Ribeiro, Antonio B.; Jackson, D. A.

http://hdl.handle.net/10284/7951

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Authors

Rao, Y. J.

Zhang, L.

Bennion, I.

Lobo Ribeiro, Antonio B.

Jackson, D. A.

Abstract(s)

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.