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As both stress and temperature can alter the lattice of a solid phosphor in a similar way, the dopant rare-earth ion may be used as a probe for either parameter using the same sensing mechanism. Here, a wideband phosphor, YAG:Ce is used as a micro stress sensor at very low magnitudes of compressive stress. The sensing resolution can be smaller than 0.06 N/mm2 in the range of 0 ~ 1.2 N/mm2 with a sensitivity...
A novel optical fiber refractive index sensor is presented. Simulations agree well with experimental results and indicate a refractive index sensitivity of 755 nm/RIU and a figure of merit of 2.38.
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