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Sensors 2010, 10(3), 1765-1781; doi:10.3390/s100301765

Whispering Gallery Modes in Standard Optical Fibres for Fibre Profiling Measurements and Sensing of Unlabelled Chemical Species

Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Rd, Oxford OX1 3TA, UK
Author to whom correspondence should be addressed.
Received: 1 January 2010 / Revised: 4 February 2010 / Accepted: 23 February 2010 / Published: 3 March 2010
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in the UK)
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Whispering gallery mode resonances in liquid droplets and microspheres have attracted considerable attention due to their potential uses in a range of sensing and technological applications. We describe a whispering gallery mode sensor in which standard optical fibre is used as the whispering gallery mode resonator. The sensor is characterised in terms of the response of the whispering gallery mode spectrum to changes in resonator size, refractive index of the surrounding medium, and temperature, and its measurement capabilities are demonstrated through application to high-precision fibre geometry profiling and the detection of unlabelled biochemical species. The prototype sensor is capable of detecting unlabelled biomolecular species in attomole quantities.
Keywords: chemical sensor; whispering gallery mode; optical fibre chemical sensor; whispering gallery mode; optical fibre
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Boleininger, A.; Lake, T.; Hami, S.; Vallance, C. Whispering Gallery Modes in Standard Optical Fibres for Fibre Profiling Measurements and Sensing of Unlabelled Chemical Species. Sensors 2010, 10, 1765-1781.

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