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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"photonic crystal fibre"”.
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Highly polarised ytterbium doped photonic crystal fibre lasers
Strathclyde theses - ask staff. Thesis no. : T12495
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Hollow core photonic crystal fibre as a viscosity and Raman sensor
… investigates the application of hollow core photonic crystal fibre for use as an optical fibre nano litre liquid sensor. The use of hollow core photonic crystal fibre for optical fibre sensing is influenced by the vast wealth of knowledge, and years of research that has been conducted for …
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Fibre gratings in novel optical fibres for applications in sensing
This thesis presents the fabrication of fibre gratings in novel optical fibres for sensing applications. Long period gratings have been inscribed into photonic crystal fibre using the electric-arc technique. The resulting sensing characteristics were found to depend on the air-hole geometry of the …
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Finite element modelling of photonic crystal fibres
Photonic crystal fibre (PCF), a new kind of optical fibre, has many air-holes in their cross-section and has potential applications to new optical communication systems. The main objective of this research is the modelling of photonic crystal fibre to identify the fundamental and higher order …
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Holographic Control of Light Propagation in Optical Waveguides
… fields to be imaged and projected through the fibre. Control over light at the fibre tip and along a fibre taper are demonstrated. I present a quantitative comparison between different algorithms for the projection of complex images to the distal facet of a multimode fibre and find that a …
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Protein Biophysics in Hollow-Core Photonic Crystal Fibres: Label-Free Monitoring of Biomolecules in Optofluidic Waveguides
… dissertation, we study the use of hollow-core photonic crystal fibre (HC-PCF), a class of optofluidic waveguides, to optically detect and monitor proteins in microfluidic environments without labels. Within this waveguiding microfluidic fibre geometry, we monitor the label-free optical …
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Investigations towards the development of a novel multimodal fibre optic sensor for oil and gas applications.
… (EMI). Compared to electrical sensors, fibre optic sensors offer several advantages like immunity to EMI, electrical isolation, ability to operate in harsh environmental conditions and freedom from corrosion. Existing fibre optical sensors in the O&G industry, based on step index single …
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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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In-situ monitoring of photocatalytic reactions in optofluidic microreactors
… challenges, this thesis marries the fields of fibre-based optofluidics and photocatalysis to generate scientific insights into how promising new photocatalysts behave. Novel types of optical fibre were optimised and characterised for liquid phase spectroscopy on sub-microlitre samples; these …
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Supercontinuum radiation for ultra-high sensitivity liquid-phase sensing
The real-time detection of trace species is key to a wide range of applications such as on-line chemical process analysis, medical diagnostics, identification of environmentally toxic species and atmospheric pollutant sensing. There is a growing demand for suitable techniques that are not only …
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Optofluidic Microreactors for Advanced Photocatalysis
… project explores the application of hollow-core photonic crystal fibres (HC- PCFs) as a novel and advanced characterization technique to monitor photocatalysis. The use of HC-PCFs as the core element of a newly developed characterisation platform has many benefits: HC-PCF’s light-guiding …