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

S. C. Warren-Smith; S. Afshar V.; T. M. Monro

doi:10.1117/12.785887

16 May 2008 Highly efficient fluorescence sensing using microstructured optical fibres: side-access and thin-layer configurations

S. C. Warren-Smith, S. Afshar V., T. M. Monro

Author Affiliations +

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70041X (2008) https://doi.org/10.1117/12.785887
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

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.

Citation Download Citation

S. C. Warren-Smith, S. Afshar V., and T. M. Monro "Highly efficient fluorescence sensing using microstructured optical fibres: side-access and thin-layer configurations", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70041X (16 May 2008); https://doi.org/10.1117/12.785887

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