Optical fibres with arrays of FBG: Properties and application

Попов, С. М.; Butov, Oleg V.; Kolosovskiy, A.O.; Voloshin, V. V.; Vorob'ev, Igor' L; Vyatkin, M. Y.; Fotiadi, Andrei A.; Chamorovskiy, Yuri K.

doi:10.1109/piers.2017.8261997

Cited by 6 publications

(6 citation statements)

References 12 publications

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“…FBG techniques are widely employed in photonics sensors devices, having many forms: uniform, chirped, and superstructure [57,58], and some research investigated laser fiber cavities and optical processors to manage complicated optical signals using the FBG technique [59][60][61]. Figure 3 shows tapered fiber based on FBG structures.…”

Section: Based On Fiber Bragg Grating (Fbg)mentioning

confidence: 99%

Comprehensive Review Tapered Optical Fiber Configurations for Sensing Application: Trend and Challenges

et al. 2021

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Understanding environmental information is necessary for functions correlated with human activities to improve healthcare quality and reduce ecological risk. Tapered optical fibers reduce some limitations of such devices and can be considerably more responsive to fluorescence and absorption properties changes. Data have been collected from reliable sources such as Science Direct, IEEE Xplore, Scopus, Web of Science, PubMed, and Google Scholar. In this narrative review, we have summarized and analyzed eight classes of tapered-fiber forms: fiber Bragg grating (FBG), long-period fiber grating (LPFG), Mach–Zehnder interferometer (MZI), photonic crystals fiber (PCF), surface plasmonic resonance (SPR), multi-taper devices, fiber loop ring-down technology, and optical tweezers. We evaluated many issues to make an informed judgement about the viability of employing the best of these methods in optical sensors. The analysis of performance for tapered optical fibers depends on four mean parameters: taper length, sensitivity, wavelength scale, and waist diameter. Finally, we assess the most potent strategy that has the potential for medical and environmental applications.

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Section: Based On Fiber Bragg Grating (Fbg)mentioning

confidence: 99%

Comprehensive Review Tapered Optical Fiber Configurations for Sensing Application: Trend and Challenges

et al. 2021

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“…A sensor based on a fiber with periodically applied WFBG can be used to obtain a higher-intensity signal from the sensor. The technology allows creating such structures directly during the extraction of fiber, which makes it convenient and inexpensive [ 28 , 30 ]. The reflection coefficient of such WFBGs can be fractions of a percent or less, while their relative amplitude spread in the array will be no more than 15% [ 55 ].…”

Section: Theorymentioning

confidence: 99%

“…A significant step toward explicitly representing the relationship between external influences and signal changes would be to modify sensors with WFBGs. Patents for such a sensor device first appeared a long time ago [ 27 ], but they have only received practical implementation relatively recently [ 28 , 29 , 30 ]. Before this point, gratings at different wavelengths were mainly surveyed, or wavelength shifts were monitored [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

The Sensitivity Improvement Characterization of Distributed Strain Sensors Due to Weak Fiber Bragg Gratings

Stepanov

Zhirnov

Chernutsky

et al. 2020

Sensors

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Weak fiber Bragg gratings (WFBGs) in a phase-sensitive optical time-domain reflectometer (phi-OTDR) sensor offer opportunities to significantly improve the signal-to-noise ratio (SNR) and sensitivity of the device. Here, we demonstrate the process of the signal and noise components’ formation in the device reflectograms for a Rayleigh scattering phi-OTDR and a WFBG-based OTDR. We theoretically calculated the increase in SNR when using the same optical and electrical components under the same external impacts for both setups. The obtained values are confirmed on experimental installations, demonstrating an improvement in the SNR by about 19 dB at frequencies of 20, 100, and 400 Hz. In this way, the minimum recorded impact (at the threshold SNR = 10) can be reduced from 100 nm per 20 m of fiber to less than 5 nm per 20 m of fiber sensor.

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“…However, the large structures monitored were not communication lines but pipelines and roads [ 18 , 19 , 20 , 21 ]. In the last few years, there have been works on the introduction of optical reflectometers with sensors based on weak Fiber Bragg Gratings (FBGs), which allow for increasing the sensitivity of the system and obtaining data with less noise [ 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Fiber-Optic Telecommunication Network Wells Monitoring by Phase-Sensitive Optical Time-Domain Reflectometer with Disturbance Recognition

Zhirnov,

Chesnokov,

Stepanov

et al. 2023

Sensors

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The paper presents the application of a phase-sensitive optical time-domain reflectometer (phi-OTDR) in the field of urban infrastructure monitoring. In particular, the branched structure of the urban network of telecommunication wells. The encountered tasks and difficulties are described. The possibilities of usage are substantiated, and the numerical values of the event quality classification algorithms applied to experimental data are calculated using machine learning methods. Among the considered methods, the best results were shown by convolutional neural networks, with a probability of correct classification as high as 98.55%.

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Optical fibres with arrays of FBG: Properties and application

Cited by 6 publications

References 12 publications

Comprehensive Review Tapered Optical Fiber Configurations for Sensing Application: Trend and Challenges

Comprehensive Review Tapered Optical Fiber Configurations for Sensing Application: Trend and Challenges

The Sensitivity Improvement Characterization of Distributed Strain Sensors Due to Weak Fiber Bragg Gratings

Fiber-Optic Telecommunication Network Wells Monitoring by Phase-Sensitive Optical Time-Domain Reflectometer with Disturbance Recognition

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