Subcarrier-based path-integrating strain sensor array utilizing fiber Bragg gratings

Michael A. Davis; Alan D. Kersey; Timothy A. Berkoff; David G. Bellemore

doi:10.1117/12.187387

21 September 1994 Subcarrier-based path-integrating strain sensor array utilizing fiber Bragg gratings

Michael A. Davis, Alan D. Kersey, Timothy A. Berkoff, David G. Bellemore

Author Affiliations +

Proceedings Volume 2294, Distributed and Multiplexed Fiber Optic Sensors IV; (1994) https://doi.org/10.1117/12.187387
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

A fiber optic sensor system capable of detecting the strain distribution in a long length of optical fiber containing a series of fiber Bragg gratings is described. The technique utilizes RF sub-carrier based determination of the optical propagation time between the grating elements, and wavelength division-based addressing of the individual FBGs in the system. The approach will have applications in structural strain monitoring where long gage length sensing is required at multiple locations.

Citation Download Citation

Michael A. Davis, Alan D. Kersey, Timothy A. Berkoff, and David G. Bellemore "Subcarrier-based path-integrating strain sensor array utilizing fiber Bragg gratings", Proc. SPIE 2294, Distributed and Multiplexed Fiber Optic Sensors IV, (21 September 1994); https://doi.org/10.1117/12.187387

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