Measurement of Material Deformation with Fiber Bragg Gratings (Summarization)

Makhsidov, V. V.; Shienok, A. M.; Ioshin, D. V.; Резников, В. А.

doi:10.1134/s0020168517150092

Cited by 2 publications

(1 citation statement)

References 53 publications

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“…Thermal crosstalk is a major problem with conventional solid-core fiber-based sensors because of high thermo-optic coefficient of silica. Various techniques like cascading multiple interferometers or fiber gratings, using fibers with different temperature sensitivities and post-processing of measured data are required to counter the effect of temperature sensitivity of solid-core fiber sensors [14,15]. It is, therefore, highly desirable to explore the use of ARHCF in mechanical force sensing.…”

Section: Introductionmentioning

confidence: 99%

Temperature-Insensitive Mechanical Sensor Using Multi-Modal Behavior of Antiresonant Hollow-Core Fibers

Goel

Zang

Parrot

et al. 2021

J. Lightwave Technol.

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We present the first report on a compact, temperature-insensitive, multi-axial mechanical force sensor based on a single-core antiresonant hollow-core fiber (ARHCF). Single-core antiresonant fibers are inherently few-moded in a short length and show characteristic multimode interference pattern in their transmission spectrum. We report here a simple technique that enhances the interaction between the interfering modes in such fibers, giving rise to up to four-fold improvement in the peak-to-peak amplitude of the interference pattern. The enhanced interference pattern is shown to be responsive to external mechanical forces, like longitudinal and transverse strain and curvature, with distinguishable linear responses. Transverse and longitudinal mechanical forces affect different attributes of the interference pattern, making the proposed sensor suitable for their simultaneous sensing. The temperature sensitivity of the sensor is found to be 3.3 pm/C suggesting negligible thermal crosstalk while measuring the effect of mechanical forces. The sensor has a compact configuration and is inherently insensitive to polarization of light used.

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Section: Introductionmentioning

confidence: 99%

Temperature-Insensitive Mechanical Sensor Using Multi-Modal Behavior of Antiresonant Hollow-Core Fibers

Goel

Zang

Parrot

et al. 2021

J. Lightwave 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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Measurement of Material Deformation with Fiber Bragg Gratings (Summarization)

Cited by 2 publications

References 53 publications

Temperature-Insensitive Mechanical Sensor Using Multi-Modal Behavior of Antiresonant Hollow-Core Fibers

Temperature-Insensitive Mechanical Sensor Using Multi-Modal Behavior of Antiresonant Hollow-Core Fibers

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

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