Simultaneous optical interrogation of multiple tuning fork resonators using range-resolved interferometry

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2017-12-25

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Conference paper

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Thomas Kissinger, Stephen W. James and Ralph P. Tatam. Simultaneous optical interrogation of multiple tuning fork resonators using range-resolved interferometry. IEEE Sensors Conference 2017, IEEE Sensors 2017, 29 October - 1 November 2017, Glasgow, UK.

Abstract

In a proof-of-principle experiment, the vibrations of a set of three tuning folk resonators are simultaneously interrogated along a single optical beam using range-resolved interferometry. Measurements with noise standard deviations in the nm levels over bandwidths of many kHz are possible. In addition, a high degree of environmental noise rejection is inherently achievable because only differential measurements between the vibrating tuning folk prong pairs are evaluated. Employing only highly coherent, robust and cost-effective diode lasers, this approach could be useful for a wide range of mechanical sensor interrogation tasks.

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Optical interferometry, Optical sensors, Mechanical sensors, Sensor systems and applications

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Attribution-NonCommercial 4.0 International

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