ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)

vol 67 / January, 2024

DOI 10.17586/0021-3454-2017-60-4-340-346

UDC 681.7.063 + 531.781.2.087.92


A. S. Munko
ITMO University, Saint Petersburg, 197101, Russian Federation; student

S. V. Varzhel
ITMO University, Saint Petersburg, 197101, Russian Federation; Associate professor, Chief of Laboratory

S. V. Arkhipov
ITMO Univresity, 197101, Saint-Petersburg, Russian Federation; postgraduate

K. A. Konnov
ITMO University, Saint Petersburg, 197101, Russian Federation; Researcher

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Abstract. The problem of stability of optical fiber strain gauge sensing element under simultaneous variations of deformation and temperature is considered. Fiber Bragg gratings is used as one of the most promising sensor elements of fiber-optic gauges. A sensing element based on two Bragg gratings with different specially selected coatings is developed. It is shown that the structure of the developed sensing element allows for separation of the influence of strain from temperature effects.
Keywords: fiber Bragg grating, sensing element, fiber optic strain gauge, Talbot interferometer, photosensitivity

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