Authors
Dmitry Arseniev, Dmitry Kiesewetter, Sergey Krivosheev, Sergey Magazinov, Victor Malyugin, Ivan Kuznetsov, Sergey Varzhel, Andrei Anatolevich Dmitriev, Victoriia Klishina, Andrei Danilov, Anastasiya Magomedova, Leonid Sverdlik, Xue Han, Changsen Sun
Published in
Sensors (Basel, Switzerland). Volume 26. Issue 20. Oct 19, 2026. Epub Oct 19, 2026.
Abstract
In most cases, the properties of fiber Bragg gratings (FBGs) are considered under axial tension or compression. The effects caused by induced anisotropy of the refractive index in FBGs under the action of a transverse load are also known. However, the change in the radiation spectrum reflected from FBGs under the influence of a load acting at an arbitrary angle to the FBG axis on the grating embedded in the elements of the mechanical system has not been studied in sufficient detail. This paper theoretically and experimentally investigated the change in the resonant wavelength of FBGs attached to a disk under the action of a compressive force acting at an arbitrary angle to the FBG axis. The FBG deformation in the static loading mode is theoretically estimated and compared with the experiment. The angle between the direction of the force applied and the FBG axis is determined at which the compression deformation turns into a tensile deformation is determined. It is shown that there is a good agreement between the theoretical and experimental data. It is established that the studied effects for the static load mode also occur under pulsed mechanical load, but with some specifics. The effects described make it possible to more accurately calculate the response of an embedded FBG to mechanical impact.
PMID:
42944484
Bibliographic data and abstract were imported from PubMed on 27 Oct 2026.
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