26 March 1993 Erbium-doped fiber ring laser strain sensor
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We describe a fiber ring strain sensor configuration which incorporates an active fiber gain section to allow lasing within the ring. Analysis of the beating between modes of this ring laser provides a measure of the optical path length in the ring, and thus strain applied to the fiber. The sensor provides an output frequency which can be tracked to determine the integrated strain over the length of the fiber ring. Results are presented showing the sensor response up to a fiber strain of approximately 4000 micro-strain.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alan D. Kersey, Alan D. Kersey, E. Joseph Friebele, E. Joseph Friebele, R. Stephen Weis, R. Stephen Weis, } "Erbium-doped fiber ring laser strain sensor", Proc. SPIE 1798, Fiber Optic Smart Structures and Skins V, (26 March 1993); doi: 10.1117/12.141329; https://doi.org/10.1117/12.141329

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