Results 11 to 20 of about 656 (188)
The Proper Use of Fibre-Optic Sensors to Monitor the Condition of the Steam Boiler Hanger Rods [PDF]
Sensors, 2023 Fibre optic sensors with integrated Bragg gratings are widely used in the diagnostics of machinery and equipment. They achieved their popularity thanks to their relatively simple operating principles.
Magdalena Palacz +4 more
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Numerical and Experimental Study of Mode Coupling Due to Localised Few-Mode Fibre Bragg Gratings and a Spatial Mode Multiplexer [PDF]
SensorsMode conversion effects in Fibre Bragg Gratings (FBGs) are widely exploited in applications such as sensing and fibre lasers. However, when FBGs are inscribed into Few-mode optical Fibres (FMFs), the mode interactions become highly complex due to the ...
James Hainsworth +5 more
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Temperature and Humidity Sensitivity of Polymer Optical Fibre Sensors Tuned by Pre-Strain [PDF]
Sensors, 2022 Polymer optical fibre Bragg grating (POFBG) sensors are of high interest due to their enhanced fracture toughness, flexibility in bending, and sensitivity in stress and pressure monitoring applications compared to silica-based sensors.
Andreas Pospori +2 more
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Regularization for the inversion of fibre Bragg grating spectra [PDF]
Inverse Problems in Science and Engineering, 2021 Fibre Bragg Gratings have become widespread measurement devices in engineering and other fields of application. In all but a few cases, the relation between cause and effect is simplified to a proportional model. However, at its mathematical core lies a nonlinear inverse problem which appears not to have received much attention in the literature.
Daniel Gerth +3 more
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Fibre Bragg gratings and their applications [PDF]
11th International Conference on Integrated Optics and Optical Fibre Communications. 23rd European Conference on Optical Communications IOOC-ECOC97, 1997 Optical fibre Bragg gratings are the most significant new fibre device since the EDFA and will have a major impact on the design and implementation of future optical networks. Applications include single and multichannel add/drop filters, EDFA gain stabilising and spectrum flattening filters, dispersion compensation; as well as wavelength stable ...
Laming, R.I., Zervas, M.N.
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Inscription methods for co‐located fibre Bragg gratings using small spot direct UV writing
Electronics Letters, 2021 Two methods to inscribe co‐located fibre Bragg gratings using the small spot direct UV writing technique are described and compared, namely: superimposed gratings, which are written one over the other at the same spatial location, and superstructured ...
S. L. Jantzen +6 more
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Laser nano-filament explosion for enabling open-grating sensing in optical fibre
Nature Communications, 2021 Engineered stop bands to sense an ambient environment can enable many applications. Here, the authors demonstrate well-controlled processes to open high-aspect ratio nanoholes through optical fibre for Bragg gratings in the telecomm spectrum and to ...
Keivan Mahmoud Aghdami +3 more
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High-temperature type IIa gratings in 12-ring photonic crystal fibre with germanosilicate core [PDF]
Journal of the European Optical Society-Rapid Publications, 2008 The inscription of efficient Bragg gratings (> 20 dB) in 12-ring photonic crystal fibre with a germanosilicate doped core without the need for hydrogen loading using 193 nm is demonstrated.
Cook K., Pohl A.A.P., Canning J.
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Sensors, 2021 This work presents an extensive, comparative study of the gamma and electron radiation effects on the behaviour of femtosecond laser-inscribed fibre Bragg gratings (FBGs) using the point-by-point and plane-by-plane inscription methods.
Antreas Theodosiou +10 more
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3D printed FBG based sensor for vital signal monitoring – Influence of the infill printing parameters [PDF]
EPJ Web of Conferences, 2022 The fused deposition modelling technique has been used in the production of strain sensors in which fibre Bragg gratings (FBGs) are encapsulated during the 3D printing process.
Ferreira Alexandra +7 more
doaj +1 more source