Journal
IEEE SENSORS JOURNAL
Volume 21, Issue 2, Pages 1534-1539Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2020.3016616
Keywords
Optical variables measurement; Bragg gratings; Optical fiber sensors; Oils; Temperature measurement; Fluid flow measurement; multiphase flow; optical fiber sensors; tilted fiber Bragg grating
Funding
- Sao Paulo Research Foundation (FAPESP) [2017/25666-2, 2018/10409-7, 2019/22554-4]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) [001]
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This article presents an optical fiber sensor based on TFBG for assessing the speed of two-phase flows, which can be interrogated in real-time according to an intensity-based, single-wavelength setup. The system is validated for samples comprised of water, oil, and air, yielding maximum relative error of 4.4% for speed measurements, whereas the sensor response can be tailored for different fluids by choosing the wavelength of the input light.
Measuring multiphase flows is essential in the oil and gas industry and medicine, as well as to microfluidic-based analyses. This article presents an optical fiber sensor for assessing the speed of two-phase flows based on tilted fiber Bragg grating (TFBG). As the dispersed slugs pass by the grating, resonance dips of cladding modes shift and work like a notch filter for a given wavelength; therefore, the TBFG can be interrogated in real-time according to an intensity-based, single-wavelength setup. The system is validated for samples comprised of water, oil, and air, yielding maximum relative error of 4.4% for speed measurements, whereas the sensor response can be tailored for different fluids by choosing the wavelength of the input light.
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