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Showing 1 to 4 of 4 for “"Bragg wavelength shift"”.
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Temperature and strain sensing using rare earth fluorescence and Bragg gratings in optical fibres
… strain effects on rare earth fluorescence and Bragg gratings in optical fibres. The development and performance of simultaneous temperature and strain measurement systems utilising a combined technique of the fluorescence intensity ratio and the Bragg wavelength shift are investigated.
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Fibre gratings in novel optical fibres for applications in sensing
… removing unwanted cross sensitivities. Fibre Bragg gratings have been fabricated in a variety of polymer optical fibres, including microstructured polymer optical fibre, using a continuous wave helium cadmium laser. The thermal response of the gratings have been characterised and found to have …
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Gamma irradiation response of photonic crystal and standard optical fibre Bragg grating sensors for radiation dosimetry
This study investigates the use of Optical Fibre Bragg Grating Sensors (FBGs) for Gamma Radiation Dosimetry. A comparative analysis of responses to gamma irradiation between standard commercial FBGs and new generation FBGs written in Photonic Crystal fibre (PCF) were examined under similar regimes …
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Monitoring of fermentation processes using novel on-line techniques
… glucose and biomass. These experiments found the Bragg wavelength shift increased as the concentration of the analytes increased for example the wavelength shift of 2.5 g/L was measured as 5.50 pm and of 15 g/L was measured as 73.41 pm. When the probe was used to analyse the fermentation samples …