Ammonia sensing using lossy mode resonances in a tapered optical fibre coated with porphyrin-incorporated titanium dioxide

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dc.contributor.authorTiwari, Divya
dc.contributor.authorMullaney, Kevin
dc.contributor.authorKorposh, Sergiy
dc.contributor.authorJames, Stephen W.
dc.contributor.authorLee, Seung-Woo
dc.contributor.authorTatam, Ralph P.
dc.date.accessioned2016-06-13T13:45:30Z
dc.date.available2016-06-13T13:45:30Z
dc.date.issued2016-05-30
dc.description.abstractThe 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 core mode to a lossy mode supported by the coating, thus creating lossy mode resonance (LMR) in the transmission spectrum. The porphyrin compound that was used to functionalise the coating was removed from the titanium dioxide coating upon exposure to ammonia, causing a change in the refractive index of the coating and a concomitant shift in the central wavelength of the lossy mode resonance. Concentrations of ammonia as small as 1ppm was detected with a response time of less than 1min. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.en_UK
dc.identifier.citationDivya Tiwari ; Kevin Mullaney ; Serhiy Korposh ; Stephen W. James ; Seung-Woo Lee ; Ralph P. Tatam. Ammonia sensing using lossy mode resonances in a tapered optical fibre coated with porphyrin-incorporated titanium dioxide. Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors. May 30-31, 2016, Limerick, Ireland.en_UK
dc.identifier.urihttp://dx.doi.org/10.1117/12.2236926
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/9967
dc.language.isoenen_UK
dc.publisherSociety of Photo-optical Instrumentation Engineers (SPIE)en_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleAmmonia sensing using lossy mode resonances in a tapered optical fibre coated with porphyrin-incorporated titanium dioxideen_UK
dc.typeConference paperen_UK

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