Results 11 to 20 of about 15,067 (255)

Evaluation of optical fibre sensors in the electrical domain [PDF]

open access: yesJournal of Sensors and Sensor Systems, 2020
Optical fibre sensors cover a wide range of applications. They offer versatile advantages including resilience to electromagnetic interference, biocompatibility and chemical resistivity.
U. Nordmeyer   +5 more
doaj   +1 more source

High-temperature type IIa gratings in 12-ring photonic crystal fibre with germanosilicate core [PDF]

open access: yesJournal 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.
doaj   +1 more source

Performance enhancement of arrayed waveguide grating‐based fibre Bragg grating interrogation assisted by random forest

open access: yesElectronics Letters, 2023
The random forest, a powerful machine learning algorithm, is introduced to improve the performance of silicon arrayed waveguide grating (AWG)‐based fibre Bragg grating (FBG) wavelength interrogation.
Zizheng Yue   +5 more
doaj   +1 more source

All-fibre phase filters with 1-GHz resolution for high-speed passive optical logic processing

open access: yesNature Communications, 2023
Authors present a fibre Bragg grating-based all-pass spectral phase filter with an unprecedented frequency resolution of 1 GHz, at least 10× improvement compared to a standard optical waveshaper.
Saket Kaushal   +5 more
doaj   +1 more source

A comparison of brazed metal and epoxied fibre Bragg grating strain sensors under high strain regimes [PDF]

open access: yes, 2017
Three different fibre Bragg grating strain sensors were tested for their suitability for measuring high strain. The sensor types were: a bare epoxied fibre Bragg grating, a standard fibre Bragg grating epoxied into a metal capillary and, finally, a metal
Khan, Saadat   +2 more
core   +1 more source

FBG_SiMul V1.0: Fibre Bragg grating signal simulation tool for finite element method models

open access: yesSoftwareX, 2016
FBG_SiMul V1.0 is a tool to study and design the implementation of fibre Bragg grating (FBG) sensors solutions in any arbitrary loaded structure or application.
G. Pereira, M. McGugan, L.P. Mikkelsen
doaj   +1 more source

A simple method for fabricating phase-shifted fibre Bragg gratings with flexible choice of centre wavelength [PDF]

open access: yes, 2009
A simple technique for fabricating phase-shifted fibre Bragg gratings (PSFBGs) without the use of a phase-shifted phase mask is presented. Two, 3-mm long, standard fibre Bragg gratings (FBGs) were inscribed sequentially in singlemode fibre at the same
Chehura, Edmon   +2 more
core   +1 more source

Regenerated Fibre Bragg Gratings [PDF]

open access: yes, 2010
Strong regenerated gratings (~18dB, L = 5cm) that can withstand temperatures in excess of 1200°C have been produced. These gratings have a number of potential applications from monitoring furnace temperatures in various fields, to high intensity optical field-resistant gratings for high peak power fibre lasers.
Canning, John   +5 more
openaire   +2 more sources

Dynamic strain measurement of hydraulic system pipeline using fibre Bragg grating sensors

open access: yesAdvances in Mechanical Engineering, 2016
Fatigue failure is a serious problem in hydraulic piping systems installed in the machinery and equipment working in harsh operational conditions. To alleviate this problem, health monitoring of pipes can be conducted by measuring and analysing vibration-
Qiang Wang   +3 more
doaj   +1 more source

Simultaneous Vector Bend and Temperature Sensing Based on a Polymer and Silica Optical Fibre Grating Pair

open access: yesSensors, 2018
The bending response of polymer optical fibre Bragg grating (POFBG) and silica optical fibre Bragg grating (SOFBG) mounted on a brass beam have been systematically studied and compared.
Binbin Yan   +10 more
doaj   +1 more source

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