DC fibre-optic accelerometer with sub-μg sensitivity

DC fibre-optic accelerometer with sub-μg sensitivity

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We describe a fibre-optic accelerometer, based on the technique of nonlinear displacement-to-strain conversion (NDSC), suitable for use at DC and low frequencies. The sensor exhibits a minimum detectable acceleration of less than 1 μg RMS (g = 9.8 m/s2) at 0.5 Hz and a linear dynamic range greater than 106.


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