Abstract
The article presents a numerical analysis of the possibility of creating a fiber-optic vibration sensor based on an attached Bragg grating. The sensor consists of two inert masses connected to each other by several membranes and an optical fiber with a fiber Bragg grating (FBG). The study is divided into two main stages: modeling the mechanical part of the sensor, assessing cross-influence and the influence of external temperatures, and developing a signal processing algorithm. A mechanical study of the vibration sensor was conducted to determine its resonant frequency and to determine the optimal length of the elastic beam. The optical part of the study focused on selectingoptimal parameters for the configuration of the arrangement of optical fibers. The results showed that the sensor has its own oscillation frequency above 2000 Hz, and there is a weak dependence of the sensor's sensitivity on the frequency of oscillations with a beam length of 1 mm. The research contributes to the development of fiber-optic accelerometers for measuring and analyzing vibration in various application areas.
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