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A high-finesse extrinsic fibre Fabry-Perot cavity with a longitudinal dimension of several micrometres is interrogated using a broadband source, and the spectral shift of a specific resonance band is employed to implement strain and temperature sensors with resolutions of 0.015 µɛ and 0.001°C, respectively.
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Bhatia et al. (1996) studied this question.
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