Optical Fiber Flowmeter Based on a Michelson Interferometer

• Type: Article in International Scientific Journal
• Date: 2023

Authors

Monteiro, CS (Author) Other; Ferreira, M (Author) Other; Mendes, JP (Author) Other; Coelho, LCC (Author) FCUP; Susana Silva (Author) FCUP; Frazao, O (Author) FCUP

Journal

Title: EPJ Web of Conferences

Vol. 305

ISSN: 2101-6275

Publisher: EDP Sciences

Other information

Authenticus ID: P-00Z-6YQ

DOI: 10.1051/epjconf/202328709040

Abstract (EN): <jats:p>In this work, an optical fiber flowmeter based on a Michelson interferometer is presented. The Michelson interferometer uses a long period fiber grating (LPFG) to couple light to the cladding modes followed by a section of a GO-coated single mode fiber (SMF). By radiating the GO thin film, it will increase its temperature changing the effective refractive index of the optical cavity of the Michelson interferometer. By placing the sensor on a gas flow, its temperature surface will decrease in a proportional manner to the flow rate. The sensor was studied in both static and dynamic dry nitrogen flow, attaining an absolute sensitivity of 17.4 ± 0.8 pm/(L.min<jats:sup>-1</jats:sup>) and a maximum response time of 1.1 ± 0.4 s.</jats:p>

Language: English

Type (Professor's evaluation): Scientific