Results 21 to 30 of about 405,286 (224)

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., Taverner, D., Richardson, D.J.   +2 more
openaire   +3 more sources

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

SoftwareX, 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

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

Advances 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, Jun Huang, Quan Liu, Zude Zhou   +3 more
doaj   +1 more source

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

Sensors, 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, Guoqiang Liu, Jun He, Yanhua Luo, Liwei Yang, Haifeng Qi, Xinzhu Sang, Kuiru Wang, Chongxiu Yu, Jinhui Yuan, Gang-Ding Peng   +10 more
doaj   +1 more source

Time-division-multiplexed interrogation of fibre Bragg grating sensors using laser diodes [PDF]

, 2001
An intensity-based technique for the interrogation of fibre Bragg grating sensors is described. The technique utilizes two longitudinal modes of a single, pulsed laser diode as a dual-wavelength source for grating illumination.
Wilson, A., Tatam, Ralph P., James, Stephen W.   +2 more
core   +1 more source

Regenerated Fibre Bragg Gratings [PDF]

, 2010
None
John Canning, Somnath Bandyopadhyay, Palas Biswas, Mattias Aslund, Michael Stevenson, Kevin Cook   +5 more
openaire   +2 more sources

Simultaneous, independent measurement of temperature and strain using a tilted fibre Bragg grating [PDF]

, 2007
A single fibre Bragg grating is used to discriminate between temperature and strain by exploiting the core-cladding mode coupling of a tilted fibre Bragg grating (TFBG).
Ralph P. Tatam, Tatam, Ralph P., Chehura, Edmon, James, Stephen W., Stephen W. James, Edmon Chehura   +5 more
core   +1 more source

Dual Measurement of Strain and Temperature Using the Combination of Er -Doped Fibre Fluorescence Lifetime and a Fibre Bragg Grating

Measurement + Control, 2001
Fibre optic sensing devices have been produced for the dual measurement of strain and temperature using the combined properties of fibre Bragg gratings and the fluorescence lifetime of erbium-doped fibre.
S.A. Wade, D.I. Forsyth, Q. Guofu, X. Chen, T. S. Chuan, W. Yong, T. Sun, K T V Grattan   +7 more
doaj   +1 more source

Multi-component strain development in superconducting magnet coils monitored using fibre Bragg grating sensors fabricated in highly linearly birefringent fibre [PDF]

, 2011
The commissioning of superconducting magnet coils was monitored using embedded optical fibre Bragg grating sensors (FBG) fabricated in highly linearly birefringent (HiBi) fibre.
Adam Johnstone, Stephen J Buggy, James, Stephen W., M’hamed Lakrimi, Andrew Twin, Twin, Andrew, Ralph P Tatam, Domptail, Fred, Lakrimi, M’hamed, Tatam, Ralph P., Stephen W James, Chehura, Edmon, Johnstone, Adam, Buggy, Stephen J., Edmon Chehura, Fred Domptail   +15 more
core   +1 more source

Advances in fibre optic based geotechnical monitoring systems for underground excavations

International Journal of Mining Science and Technology, 2019
Geotechnical stability is a major concern for the long-term safety and integrity of underground infrastructures such as tunnels, railway stations, mine shafts and hydraulic power chambers.
Hongkui Gong, Mehmet S. Kizil, Zhongwei Chen, Moe Amanzadeh, Ben Yang, Saiied M. Aminossadati   +5 more
doaj   +1 more source