Simulation and Measurement of Strain Waveform under Vibration Using Fiber Bragg Gratings
Smailov N. Koshkinbayev S. Aidana B. Kuttybayeva A. Tashtay Y. Aziskhan A. Arseniev D. Kiesewetter D. Krivosheev S. Magazinov S. Malyugin V. Sun C.
October 2024Multidisciplinary Digital Publishing Institute (MDPI)
Sensors
2024#24Issue 19
The work is devoted to the consideration of methods for determining the strain of objects using fiber Bragg gratings under a high-frequency vibration or pulsed mechanical action, which is difficult to perform using widespread methods and devices. The methods are based on numerical processing of the time dependence of the radiation power reflected from the fiber Bragg grating at various wavelengths, which makes it possible to measure strain parameters in a wide range of magnitude and frequencies. The efficiency of the proposed methods is demonstrated by numerical simulation. It is shown that it is possible to restore the strain dependence on time in the range (Formula presented.) (Formula presented.) or more from simultaneously measured power dependencies reflected by the fiber Bragg grating using common fiber-optic components. The case of sequential registration of reflected radiation power at different wavelengths to determine the probability density of the distribution of the strain values is also considered. The results of signal processing obtained both by numerical simulation and experimentally for the case of a linear vibration are presented. The technical problems of using the proposed methods are discussed.
deformation , digital signal processing , fiber Bragg grating , sensor , strain , vibration
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Department of Electronics, Telecommunications and Space Technologies, Satbayev University, Almaty, 050013, Kazakhstan
Department of IT and Telecommunications, Miras University, Shymkent, 160012, Kazakhstan
Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russian Federation
College of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian, 116024, China
Department of Electronics
Department of IT and Telecommunications
Peter the Great St. Petersburg Polytechnic University
College of Optoelectronic Engineering and Instrumentation Science
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