Strain measurements of a fiber loop rosette using high spatial resolution Rayleigh scatter distributed sensing
2010
Strain is measured with high spatial resolution on fiber loops bonded to a metal test sample to form a fiber rosette. Strain
measurements are made using an Optical Backscatter Reflectometer to detect changes in the phase of the Rayleigh
Scatter of the fiber with 160 μm spatial resolution along the length of the fiber. Using this experimental set-up, applied
strain levels as well as the axis along which the loads are applied are measured. Thermal gradients are also detected. The
high spatial resolution and strain sensitivity of this technique enable highly functional fiber rosettes formed of small
diameter loops of standard low-bend-loss optical fiber.
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