Spectral sensor resolution measurement improvements by temporal analysis

Abstract

In this work we present time domain interferometry (TDI) and spectral domain interferometry (SDI) techniques applied to a fiber optic Fizeau interferometer sensor. This class of sensor is capable of measuring parameters such as position, length and vibrations, in the spectral domain with improved resolution by a temporal analysis. In particular, Fourier domain SDI (FD-SDI), is able of measuring absolute cavity lengths with a resolution of 10 μm typically, depending on the bandwidth of the optic source and the spectrometer. Alternatively, TDI allows making displacement measurements within a resolution of λ/10, depending on the laser light wavelength (λ) used.

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Keywords

UTN, Facultad Regional Delta, Optical interferometry, Silicon, Spectral analysis, Detectors, Discrete Fourier transforms, Time-domain analysis, Optical fibers

Citation

J. Antonacci, E. N. Morel, J. Torga, R. Duchowicz and G. F. Arenas, "Spectral sensor resolution measurement improvements by temporal analysis," 2017 XVII Workshop on Information Processing and Control (RPIC), Mar del Plata, 2017, pp. 1-5, doi: 10.23919/RPIC.2017.8214341.

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Except where otherwised noted, this item's license is described as info:eu-repo/semantics/openAccess