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research article
An optical fibre sensor for dynamic deformation measurements based on the intensity modulation of a low-coherence source
An optical fibre sensing technique for the measurement of dynamic deformations using a Michelson interferometer is reported. The method applied to interferometers with an initial path unbalance of around 1 cm is based on the rf intensity modulation of a low-coherence source. A large measurement range of 1 cm is intrinsic to the method and with an adequate demodulation process sensitivity better than 10 μm is obtained. This novel approach allows for measuring dynamic deformations with a bandwidth up to 100 Hz.
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Name
Lloret-2003-An optical fibre sen.pdf
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openaccess
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381.03 KB
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Adobe PDF
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725d6e1f1be3b838f1a2fa5e69afc39d