Journal
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES
Volume 65, Issue 5, Pages 687-710Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0020441222050268
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Funding
- [AAAA-A19-119042590085-2]
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This review provides an overview of state-of-the-art software and hardware methods for detecting the frequency shift of a stimulated and spontaneous Brillouin scattering spectrum in the distributed fiber-optic sensors and fiber-optic metrology industry. It discusses current approaches to optical-fiber probing and signal detection, as well as digital filtering methods to improve the signal-to-noise ratio of the spectrum. The review also covers Lorentzian curve fitting (LCF) spectrum approximation methods, correlation methods, artificial intelligence methods, and machine learning methods.
This review describes state-of-the-art software and hardware methods for detecting the frequency shift of a stimulated and spontaneous Brillouin scattering spectrum for the needs of the distributed fiber-optic sensors and fiber-optic metrology industry. Current approaches to optical-fiber probing and signal detection are presented. Digital filtering methods that provide an increase in the signal-to-noise ratio of the spectrum are described. A review of Lorentzian curve fitting (LCF) spectrum approximation methods, correlation methods, artificial intelligence methods, and machine learning methods has been made.
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