Fiber‐Optic Sensors

Ecke, Wolfgang; Chen, Kevin; Leng, Jinsong

doi:10.1002/9783527679249.ch5

Material‐Integrated Intelligent Systems ‐ Technology and Applications 2017

DOI: 10.1002/9783527679249.ch5

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Fiber‐Optic Sensors

Wolfgang Ecke

Kevin Chen

Jinsong Leng³

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2024

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Cited by 2 publications

References 109 publications

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Measurement of dynamic deformation during shock loading using a fiber-optic loop-sensor

Baohui,

Luong,

Gupta

2024

Meas. Sci. Technol.

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Characterizing materials under shock loading has been of interest in fields such as protective material development, biomechanics to study the injury mechanics and high-speed aerodynamic structures. However, shock loading of material is a very short duration phenomenon and it is extremely challenging to develop sensors for dynamic measurements under such loading conditions. Optical fiber sensors that present the possibilities to allow high resolution measurement of force or displacement in such high strain rate loading conditions. This work studies the possibility of developing a single mode optical fiber sensor based on the principle of power losses from the curved section for dynamic measurements under shock loading conditions. The strain measurement results obtained from the optical sensors are validated with the controlled digital image correlation measurements are found to be in close correlation. The sensor was able to provide time sensitivity of better than 1 ms. The results show that the fiber sensor has the characteristics of high sensitivity and high precision, which can be used to measure fine vibration in real-time.

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Measurement of dynamic deformation during shock loading using a fiber-optic loop-sensor

Baohui,

Luong,

Gupta

2024

Meas. Sci. Technol.

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Simulation and Measurement of Strain Waveform under Vibration Using Fiber Bragg Gratings

Smailov,

Koshkinbayev,

Aidana

et al. 2024

Sensors

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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 ±1000 μϵ 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.

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Fiber‐Optic Sensors

Cited by 2 publications

References 109 publications

Measurement of dynamic deformation during shock loading using a fiber-optic loop-sensor

Measurement of dynamic deformation during shock loading using a fiber-optic loop-sensor

Simulation and Measurement of Strain Waveform under Vibration Using Fiber Bragg Gratings

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