23 July 1993 Optical rotation sensing: the Sagnace effect from the viewpoint of the rotating observer
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Proceedings Volume 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology; 1983C7 (1993) https://doi.org/10.1117/12.2308858
Event: 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1993, Budapest, Hungary
Abstract
In this paper we demonstrate the operation of a feedback stabilised quadrature phase-shifted extrinsic Fabry-Perot (FP) fibre-optic sensor for the remote detection of the amplitude and the relative phase of subnanometer vibrations and displacements. The surface of a measured object facing at a short distance the end of single-mode fibre, acts as a reflector, thereby creating an air gap that acts as a Fabry-Perot cavity. A theoretical description of the sensor is given, and its operation is described. The resolution order of 104' m in vibration amplitude measurement was obtained.
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Maria Herminia Marcal, Maria Herminia Marcal, } "Optical rotation sensing: the Sagnace effect from the viewpoint of the rotating observer", Proc. SPIE 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1983C7 (23 July 1993); doi: 10.1117/12.2308858; https://doi.org/10.1117/12.2308858
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