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Spectral interferometry for high-finesse Fabry-Perot sensors: Cramer-Rao bound of cavity length resolution
Author(s): Aleksandr A. Markvart; Leonid B. Liokumovich; Nikolai A. Ushakov
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Paper Abstract

The paper develops an analytical apparatus to describe the resolution limits of optical fiber sensors, based on high-finesse Fabry-Perot interferometer, interrogated by means of spectral interferometry. The properties of interferometer spectral function, required for the analysis of resolution, are developed; in order to analyze the influence of noises on the resolution, Cramer-Rao formalism is utilized. An estimation of achievable resolution and optimal interferometer parameters in case of dominant photo detector noise is done.

Paper Details

Date Published: 28 August 2019
PDF: 4 pages
Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111992Y (28 August 2019); doi: 10.1117/12.2540021
Show Author Affiliations
Aleksandr A. Markvart, Saint-Petersburg State Polytechnical Univ. (Russian Federation)
Leonid B. Liokumovich, Saint-Petersburg State Polytechnical Univ. (Russian Federation)
Nikolai A. Ushakov, Saint-Petersburg State Polytechnical Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 11199:
Seventh European Workshop on Optical Fibre Sensors
Kyriacos Kalli; Sinead O. O'Keeffe; Gilberto Brambilla, Editor(s)

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