Abstract

A novel optical fiber sensor system suitable for monitoring the strain/stress distribution of mechanical structures is reported, in which an array of interferometric-type sensors is integrated based on a new spatial-frequency- multiplexing technique. It not only maintains the inherent advantage of the high dynamic range of interferometric sensors but also offers the additional benefits of simple robust system configuration, direct digital readout, and low building, installation, and maintenance cost. Preliminary experimental results on a suspension beam are reported.

© 1995 Optical Society of America

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