Kate Sugden | Aston University (original) (raw)
Papers by Kate Sugden
CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009
... Raja P Pappu*, Wei Zhang, Ian Bennion, Kate Sugden PhotonicsResearchGroup, Aston University, ... more ... Raja P Pappu*, Wei Zhang, Ian Bennion, Kate Sugden PhotonicsResearchGroup, Aston University, BirminghamB4 7ET, UK, *pappurp@aston.ac.uk ... Optical fiber based sensors, since they are easy to embed in structures, simple to multiplex and ofsmall weight, are an attractive ...
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Journal of Lightwave Technology, 2015
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Optics Express
We present a novel device for the characterisation of static magnetic fields through monitoring w... more We present a novel device for the characterisation of static magnetic fields through monitoring wavelength shifts of femtosecond inscribed fibre Bragg grating and micromachined slot, coated with Terfenol-D. The device was sensitive to static magnetic fields and can be used as a vectoral sensor for the detection of magnetic fields as low as 0.046 mT with a resolution of ± 0.3mT in transmission and ± 0.7mT in reflection. The use of a femtosecond laser to both inscribe the FBGs and micromachine the slot in a single stage prior to coating the device significantly simplifies the fabrication.
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Proceedings of SPIE - The International Society for Optical Engineering
A novel device for the detection and characterisation of static magnetic fields is presented. It ... more A novel device for the detection and characterisation of static magnetic fields is presented. It consists of a femtosecond laser inscribed fibre Bragg grating (FBG) that is incorporated into an optical fibre with a femtosecond laser micromachined slot. The symmetry of the fibre is broken by the micro-slot, producing non-uniform strain across the fibre cross section. The sensing region is coated with Terfenol-D making the device sensitive to static magnetic fields, whereas the symmetry breaking results in a vectorial sensor for the detection of magnetic fields as low as 0.046 mT with a resolution of +/-0.3mT in transmission and +/-0.7mT in reflection. The sensor output is directly wavelength encoded from the FBG filtering, leading to simple demodulation through the monitoring of wavelength shifts that result as the fibre structure changes shape in response to the external magnetic field. The use of a femtosecond laser to both inscribe the FBG and micro-machine the slot in a single st...
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Electronics Letters, 1994
Chirped gratings with very broad reflection bandwidths up to 44 nm and high reflectivity have bee... more Chirped gratings with very broad reflection bandwidths up to 44 nm and high reflectivity have been produced holographically in boron-codoped and standard telecommunications fibers which have been hydrogen-soaked. A 2 nm wide transmission band has been produced within the broad reflection band by use of an amplitude mask during grating exposure.
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Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI, 2012
ABSTRACT As optical coherence tomography (OCT) becomes widespread, validation and characterizatio... more ABSTRACT As optical coherence tomography (OCT) becomes widespread, validation and characterization of systems becomes important. Reference standards are required to qualitatively and quantitatively measure the performance between difference systems. This would allow the performance degradation of the system over time to be monitored. In this report, the properties of the femtosecond inscribed structures from three different systems for making suitable OCT characterization artefacts (phantoms) are analyzed. The parameter test samples are directly inscribed inside transparent materials. The structures are characterized using an optical microscope and a swept-source OCT. The high reproducibility of the inscribed structures shows high potential for producing multi-modality OCT calibration and characterization phantoms. Such that a single artefact can be used to characterize multiple performance parameters such the resolution, linearity, distortion, and imaging depths.
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2008 Conference on Lasers and Electro-Optics, 2008
The glass used was Standard BK7 microscope slides of 3mm thickness. The sample was mounted on a j... more The glass used was Standard BK7 microscope slides of 3mm thickness. The sample was mounted on a jig on a 3D stage with the beam delivered through a machining objective on a linear stage. The beam was focused by an air-spaced triplet lens of focal length 66mm an NA of ...
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2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666), 2003
Abstract In this paper we consider the possibility of using intermediate solutions, in which idea... more Abstract In this paper we consider the possibility of using intermediate solutions, in which ideal apodisation profile for a dispersion-free, sharp-reflection profile fibre Bragg grating approximated in different degrees. The ideal apodisation profile for a flat dispersion, 50 ...
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2008 Conference on Lasers and Electro-Optics, 2008
ABSTRACT A 1.2(height)×125(depth)×500(length) micro-slot was engraved along a fiber Bragg grating... more ABSTRACT A 1.2(height)×125(depth)×500(length) micro-slot was engraved along a fiber Bragg grating by chemically assisted femtosecond laser processing. By filling epoxy and UV-curing, waveguide with plastic-core and silica-cladding was created, presenting high thermal responding coefficient of 211pm/°C.
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Advanced Photonics & Renewable Energy, 2010
ABSTRACT
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20th International Conference on Optical Fibre Sensors, 2009
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Optics Letters, 2007
We propose and demonstrate novel virtual Gires-Tournois (GT) etalons based on fiber gratings. By ... more We propose and demonstrate novel virtual Gires-Tournois (GT) etalons based on fiber gratings. By introducing an additional phase modulation in wideband linearly chirped fiber Bragg gratings, we have successfully generated GT resonance with only one grating. This technique can simplify the fabrication procedure while retaining the normal advantages of distributed etalons, including their full compatibility with optical fiber, low insertion loss, and low cost. Such etalons can be used as dispersion compensation devices in optical transmission systems.
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ABSTRACT
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CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009
... Raja P Pappu*, Wei Zhang, Ian Bennion, Kate Sugden PhotonicsResearchGroup, Aston University, ... more ... Raja P Pappu*, Wei Zhang, Ian Bennion, Kate Sugden PhotonicsResearchGroup, Aston University, BirminghamB4 7ET, UK, *pappurp@aston.ac.uk ... Optical fiber based sensors, since they are easy to embed in structures, simple to multiplex and ofsmall weight, are an attractive ...
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Journal of Lightwave Technology, 2015
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Optics Express
We present a novel device for the characterisation of static magnetic fields through monitoring w... more We present a novel device for the characterisation of static magnetic fields through monitoring wavelength shifts of femtosecond inscribed fibre Bragg grating and micromachined slot, coated with Terfenol-D. The device was sensitive to static magnetic fields and can be used as a vectoral sensor for the detection of magnetic fields as low as 0.046 mT with a resolution of ± 0.3mT in transmission and ± 0.7mT in reflection. The use of a femtosecond laser to both inscribe the FBGs and micromachine the slot in a single stage prior to coating the device significantly simplifies the fabrication.
Bookmarks Related papers MentionsView impact
Proceedings of SPIE - The International Society for Optical Engineering
A novel device for the detection and characterisation of static magnetic fields is presented. It ... more A novel device for the detection and characterisation of static magnetic fields is presented. It consists of a femtosecond laser inscribed fibre Bragg grating (FBG) that is incorporated into an optical fibre with a femtosecond laser micromachined slot. The symmetry of the fibre is broken by the micro-slot, producing non-uniform strain across the fibre cross section. The sensing region is coated with Terfenol-D making the device sensitive to static magnetic fields, whereas the symmetry breaking results in a vectorial sensor for the detection of magnetic fields as low as 0.046 mT with a resolution of +/-0.3mT in transmission and +/-0.7mT in reflection. The sensor output is directly wavelength encoded from the FBG filtering, leading to simple demodulation through the monitoring of wavelength shifts that result as the fibre structure changes shape in response to the external magnetic field. The use of a femtosecond laser to both inscribe the FBG and micro-machine the slot in a single st...
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Electronics Letters, 1994
Chirped gratings with very broad reflection bandwidths up to 44 nm and high reflectivity have bee... more Chirped gratings with very broad reflection bandwidths up to 44 nm and high reflectivity have been produced holographically in boron-codoped and standard telecommunications fibers which have been hydrogen-soaked. A 2 nm wide transmission band has been produced within the broad reflection band by use of an amplitude mask during grating exposure.
Bookmarks Related papers MentionsView impact
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI, 2012
ABSTRACT As optical coherence tomography (OCT) becomes widespread, validation and characterizatio... more ABSTRACT As optical coherence tomography (OCT) becomes widespread, validation and characterization of systems becomes important. Reference standards are required to qualitatively and quantitatively measure the performance between difference systems. This would allow the performance degradation of the system over time to be monitored. In this report, the properties of the femtosecond inscribed structures from three different systems for making suitable OCT characterization artefacts (phantoms) are analyzed. The parameter test samples are directly inscribed inside transparent materials. The structures are characterized using an optical microscope and a swept-source OCT. The high reproducibility of the inscribed structures shows high potential for producing multi-modality OCT calibration and characterization phantoms. Such that a single artefact can be used to characterize multiple performance parameters such the resolution, linearity, distortion, and imaging depths.
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2008 Conference on Lasers and Electro-Optics, 2008
The glass used was Standard BK7 microscope slides of 3mm thickness. The sample was mounted on a j... more The glass used was Standard BK7 microscope slides of 3mm thickness. The sample was mounted on a jig on a 3D stage with the beam delivered through a machining objective on a linear stage. The beam was focused by an air-spaced triplet lens of focal length 66mm an NA of ...
Bookmarks Related papers MentionsView impact
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666), 2003
Abstract In this paper we consider the possibility of using intermediate solutions, in which idea... more Abstract In this paper we consider the possibility of using intermediate solutions, in which ideal apodisation profile for a dispersion-free, sharp-reflection profile fibre Bragg grating approximated in different degrees. The ideal apodisation profile for a flat dispersion, 50 ...
Bookmarks Related papers MentionsView impact
2008 Conference on Lasers and Electro-Optics, 2008
ABSTRACT A 1.2(height)×125(depth)×500(length) micro-slot was engraved along a fiber Bragg grating... more ABSTRACT A 1.2(height)×125(depth)×500(length) micro-slot was engraved along a fiber Bragg grating by chemically assisted femtosecond laser processing. By filling epoxy and UV-curing, waveguide with plastic-core and silica-cladding was created, presenting high thermal responding coefficient of 211pm/°C.
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Advanced Photonics & Renewable Energy, 2010
ABSTRACT
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20th International Conference on Optical Fibre Sensors, 2009
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Optics Letters, 2007
We propose and demonstrate novel virtual Gires-Tournois (GT) etalons based on fiber gratings. By ... more We propose and demonstrate novel virtual Gires-Tournois (GT) etalons based on fiber gratings. By introducing an additional phase modulation in wideband linearly chirped fiber Bragg gratings, we have successfully generated GT resonance with only one grating. This technique can simplify the fabrication procedure while retaining the normal advantages of distributed etalons, including their full compatibility with optical fiber, low insertion loss, and low cost. Such etalons can be used as dispersion compensation devices in optical transmission systems.
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
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ABSTRACT
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