Locally pressed fibre Bragg grating pressure sensor [PDF]
, 2006 A spectral-hole created by locally pressing a fibre Bragg grating exhibited a wavelength-shift within the FBG bandwidth. A sensitivity of 74.3pm/(N/mm) was obtained for pressure applied along the slow axis of a high birefringence ...
Tatam, Ralph P. +3 more
core +5 more sources
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
Nonlinear switching in fibre Bragg gratings
Optics Express, 1998 We report on our recent experiments on nonlinear switching in fibre Bragg gratings. Using an all-fibre source we show an increase in transmission of a FBG from 4% to 40% at high powers. This switching is associated with the formation of gap solitons inside the grating.
Broderick, N.G.R. +2 more
openaire +3 more sources
A High-Temperature Fiber Sensor Using a Low Cost Interrogation Scheme
Sensors, 2013 Regenerated Fibre Bragg Gratings have the potential for high-temperature monitoring. In this paper, the inscription of Fibre Bragg Gratings (FBGs) and the later regeneration process to obtain Regenerated Fiber Bragg Gratings (RFBGs) in high-birefringence
Salvador Sales, David Barrera
doaj +1 more source
A simple method for fabricating phase-shifted fibre Bragg gratings with flexible choice of centre wavelength [PDF]
, 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
Ralph P. Tatam +5 more
core +1 more source
An investigation of chirped fibre Bragg gratings Fabry-Perot interferometer for sensing applications [PDF]
, 2005 Fibre interferometer configurations such as the Michelson and Fabry-Perot (FP) have been formed using uniformed and chirped Fibre Bragg Gratings (FBG) acting as partial reflectors. As well as increasing the dynamic range of the interferometer, chirped
Cheung, Chi Shing
core +4 more sources
Thermal dependence of the strain response of optical fibre Bragg gratings. [PDF]
, 2004 The temperature dependence of the strain sensitivity of fibre Bragg gratings written into a number of different fibre types has been investigated. It was found that the strain response changed on average by 0.21 ± 0.03 fm µε-1 °C-1 over a range of ...
O'Dwyer, Martin +8 more
core +1 more source
Bi-Signature optical spectroscopy for online fault detection in electrical machines
The Journal of Engineering, 2019 A novel bi-signature optical spectroscopy for fault detection in electrical machines is presented. The combined use of long period grating (LPG) and two fibre Bragg gratings (FBG1 and FBG2) is implemented to discriminate between vibration and temperature
Belema P. Alalibo +2 more
doaj +1 more source
Load monitoring of a cantilever plate by a novel multimodal fibre optic sensing configuration
SN Applied Sciences, 2021 Optical fibre sensors and in particular fibre Bragg gratings (FBG) have received a lot of interest for Structural Health Monitoring in different application fields, such as aerospace, pipeline and civil engineering.
N. Nazeer, R. M. Groves
doaj +1 more source