Results 51 to 60 of about 58,600 (289)

Q-switching of an erbium-doped fibre laser modulated by a Bragg grating fixed to a piezoelectric [PDF]

open access: yes, 2003
The performance of the Q-switched erbium-doped fibre laser with two fibre Bragg gratings as cavity mirrors was theoretically analysed, employing a set of rate equations for the ion populations and the photon flux inside the cavity.
Andrés, Miguel V.   +3 more
core   +2 more sources

High-extinction-ratio TE/TM selective Bragg grating filters on silicon-on-insulator [PDF]

open access: yes, 2016
We report on the design and fabrication of TE and TM polarization selective Bragg grating filters in the form of sinusoidal perturbations on the waveguide sidewall and etched holes on the top of the waveguide, respectively.
Klitis, Charalambos   +3 more
core   +11 more sources

Fibre Bragg gratings and their applications [PDF]

open access: yes11th International Conference on Integrated Optics and Optical Fibre Communications. 23rd European Conference on Optical Communications IOOC-ECOC97, 1997
Summary form only given. 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
Laming, R.I., Zervas, M.N.
openaire   +2 more sources

Extreme Silica Optical Fibre Gratings

open access: yesSensors, 2008
A regenerated optical fibre Bragg grating that survives temperature cycling up to 1,295°C is demonstrated. A model based on seeded crystallisation or amorphisation is proposed.
Kevin Cook   +3 more
doaj   +1 more source

A Review: Application and Implementation of Optic Fibre Sensors for Gas Detection

open access: yesSensors, 2021
At the present time, there are major concerns regarding global warming and the possible catastrophic influence of greenhouse gases on climate change has spurred the research community to investigate and develop new gas-sensing methods and devices for ...
Thomas Allsop, Ronald Neal
doaj   +1 more source

Ultra-high-sensitivity two-dimensional bend sensor [PDF]

open access: yes, 2006
A multicore fibre Fabry-Perot-based strain sensor interrogated with tandem interferometry for bend measurement is described. Curvature in two dimensions is obtained by measuring the difference in strain between three co-located low finesse Fabry-Perot ...
Barton, J S   +4 more
core   +1 more source

Suppression of the near-infrared OH night sky lines with fibre Bragg gratings - first results [PDF]

open access: yes, 2012
The background noise between 1 and 1.8 ?mu m in ground-based instruments is dominated by atmospheric emission from hydroxyl molecules. We have built and commissioned a new instrument, the Gemini Near-infrared OH Suppression Integral Field Unit (IFU ...
S. Ellis   +23 more
semanticscholar   +1 more source

Crack Detection in Fibre Reinforced Plastic Structures Using Embedded Fibre Bragg Grating Sensors: Theory, Model Development and Experimental Validation. [PDF]

open access: yesPLoS ONE, 2015
In a fibre-reinforced polymer (FRP) structure designed using the emerging damage tolerance and structural health monitoring philosophy, sensors and models that describe crack propagation will enable a structure to operate despite the presence of damage ...
G F Pereira, L P Mikkelsen, M McGugan
doaj   +1 more source

Fibre Bragg Grating Sensors for Condition Monitoring of High-Voltage Assets: A Review

open access: yesEnergies, 2023
The high-voltage (HV) assets in the existing power transmission network will experience increased electrical, thermal, environmental and mechanical stresses and, therefore, robust condition monitoring is critical for power system reliability planning ...
Veeresh Ramnarine   +2 more
doaj   +1 more source

Dataset for centrifuge modelling of laterally monotonic loaded monopiles in saturated dense sand

open access: yesData in Brief, 2022
The presented dataset was collected in seven centrifuge tests, specifically designed for modelling the lateral response of offshore monopiles in dense sand. Two model piles with outer diameter D = 50 mm were loaded laterally at 100 × g.
Zhong-Sen Li, Matthieu Blanc, Luc Thorel
doaj   +1 more source

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