Liquid flow motion rate measuring method, based on the fiber Bragg gratings

The paper presents the study of the possibilities of optical monitoring of the fluid flow velocity. An optical fiber with an array of Bragg fiber gratings, the central wavelengths of which varied depending on the velocity of the transmitted stream, was used as a sensitive element. The advantage of t...

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Bibliographic Details
Published in:Optical and quantum electronics 2020-03, Vol.52 (3), Article 132
Main Authors: Novikova, Victoria A., Varzhel, Sergey V., Tokareva, Ianina D., Dmitriev, Andrey A.
Format: Article
Language:English
Subjects:
Anemometers
Bragg gratings
Characterization and Evaluation of Materials
Computer Communication Networks
Electrical Engineering
Flow velocity
Fluid dynamics
Fluid flow
Fundamentals of Laser Assisted Micro- & Nanotechnologies 2019
Hot-wire anemometers
Lasers
Liquid flow
Optical Devices
Optical fibers
Optics
Photonics
Physics
Physics and Astronomy
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Summary:The paper presents the study of the possibilities of optical monitoring of the fluid flow velocity. An optical fiber with an array of Bragg fiber gratings, the central wavelengths of which varied depending on the velocity of the transmitted stream, was used as a sensitive element. The advantage of the developed method lies in the possibility of additional simultaneous measurement of the temperature of the liquid—which allows us to produce hot-wire anemometers, or to exclude the influence of temperature on measurements of the flow velocity. The sensitivity of the developed method was 697 pm/(m/s).
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-020-2257-2