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Proceedings Paper

Highly efficient fluorescence sensing using microstructured optical fibres: side-access and thin-layer configurations
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Paper Abstract

A model is presented for calculating the performance of fluorescence-based optical-fibre sensors that considers the full vectorial nature of optical-fibre electromagnetic-field solutions making it suitable for modeling microstructured optical fibres with wavelength and sub-wavelength-scale features. By applying the model to a specific fibre geometry it is shown that high-index, small core (subwavelength) fibres allow for enhanced fluorescence capturing due to the formation of a thin, high-intensity layer at the core-cladding boundary. The model is evaluated in this regime for two sensing configurations of particular interest for future sensing systems, a side-access sensor for liquid-based sensing and a thin-layer (surface) sensor. Both configurations can offer improvements for fluorescence-based sensing.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70041X (16 May 2008); doi: 10.1117/12.785887
Show Author Affiliations
S. C. Warren-Smith, Univ. of Adelaide (Australia)
S. Afshar V., Univ. of Adelaide (Australia)
T. M. Monro, Univ. of Adelaide (Australia)


Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors

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