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5 February 1990 Embedded Modal Domain Sensors Using Elliptical Core Optical Fibers
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Few-mode, elliptical core fibers embedded in graphite-epoxy composites have been shown to detect the strain and vibration effects on the host material. A theoretical description of the sensor operation is presented and the insensitivity of the lead-in and lead-out fibers to strain is investigated. A scheme using a single-mode elliptical-core fiber as the lead-in fiber and an offset circular core single mode fiber as the lead-out fiber is successfully implemented. The effect on the sensitivity of the system, when the fibers are embedded between different layers of the laminate, is evaluated.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
K. A. Murphy, M. S. Miller, A. M. Vengsarkar, R. O. Claus, and N. E. Lewis "Embedded Modal Domain Sensors Using Elliptical Core Optical Fibers", Proc. SPIE 1170, Fiber Optic Smart Structures and Skins II, (5 February 1990);

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