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  1. 1 Metrology and Measurement Systems
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  1. 1 Kisała Piotr
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  1. 1 2022
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Content available Physical foundations determining spectral characteristics measured in Bragg gratings subjected to bending
Kisała Piotr
Metrology and Measurement Systems
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2022
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Vol. 29, nr 3
573--584
EN
The article presents an analysis of the impact of bending optical fibers with tilted Bragg gratings on their spectral parameters. This article proves that it is possible to a choose TFBG cladding mode and the optical spectrum range related to it that allows the best metrological properties to be obtained when measuring bend. The results contained in the paper explain why the minima in the spectral characteristics, corresponding only to some cladding modes, change their shape during TFBG bending, which is important for application of Bragg gratings as bending sensors. It has been presented that in the case of TFBG we are able to aggregate the knowledge obtained during experiment to the form of a physical model of the fiber bending sensor.
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