Browsing by Author "Mullaney, Kevin"

Browsing by Author "Mullaney, Kevin"

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  • Tiwari, Divya; Mullaney, Kevin; Korposh, Sergiy; James, Stephen W.; Lee, Seung-Woo; Tatam, Ralph P. (Society of Photo-optical Instrumentation Engineers (SPIE), 2016-05-30)
    The development of an ammonia sensor, formed by the deposition of a functionalised titanium dioxide film onto a tapered optical fibre is presented. The titanium dioxide coating allows the coupling of light from the fundamental ...
  • Tiwari, Divya; Mullaney, Kevin; Korposh, Sergiy; James, Stephen W.; Lee, Seung-Woo; Tatam, Ralph P. (Elsevier, 2017-04)
    The development of a highly sensitive ammonia sensor is described. The sensor is formed by deposition of a nanoscale coating of titanium dioxide, containing a porphyrin as a functional material, onto a tapered optical ...
  • Mullaney, Kevin (Cranfield University, 2016-11)
    This thesis describes the processes used to manufacture optical fibre tapers and tapered long period gratings (TLPGs) using a CO2 laser. A semi-automated system for fabricating adiabatic and non-adiabatic tapers with ...
  • Mullaney, Kevin; Goncalves Correia, Ricardo; Staines, Stephen E.; James, Stephen W.; Tatam, Ralph P. (OSA Publishing, 2015-10-01)
    The use of a range of optical techniques to monitor the process of fabricating optical fiber tapers is investigated. Thermal imaging was used to optimize the alignment of the optical system; the transmission spectrum of ...
  • Mullaney, Kevin; Correia, Ricardo; Staines, Stephen; James, Stephen W.; Tatam, Ralph P. (SPIE, 2017-04-23)
    A variety of optical methods to enhance the process of making optical fibre tapers are explored. A thermal camera was used to both refine the alignment of the optical components and optimize the laser power profile during ...
  • Urrutia, Aitor; Bojan, Kartheka; Marques, L.; Mullaney, Kevin; Goicoechea, Javier; James, Stephen W.; Clark, M.; Tatam, Ralph P.; Korposh, Sergiy (Hindawi Publishing Corporation, 2016-08-08)
    In this work, novel protein sensors based on tapered optical fibres modified with Au coatings deposited using two different procedures are proposed. Au based coatings are deposited onto a non-adiabatic tapered optical fibre ...
  • Mullaney, Kevin; Staines, Stephen; James, Stephen; Tatam, Ralph P. (SPIE, 2017-04-23)
    The process of fabricating tapered long period gratings (TLPGs) using a CO2 laser is described. TLPGs with a period spacing of 378 μm, were fabricated by optimization of the taper waist diameter and careful control of the ...
  • Mullaney, Kevin; Staines, Stephen; James, Stephen; Ralph, Tatam (IEEE, 2017-11-03)
    The process of fabricating tapered long period gratings (TLPGs) using a CO2 laser is described. The objective of this work is to optimize the CO2 laser based fabrication of TLPGs so that their transmission spectra are ...
  • Mullaney, Kevin; Staines, Stephen E.; James, Stephen W.; Tatam, Ralph P. (IEEE, 2017-11-03)
    The CO2 laser based fabrication of tapered long period gratings (TLPGs) is optimized so that their transmission spectra are comparable with those made using the arc-discharge technique, which typically exhibits transmission ...