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https://hdl.handle.net/2440/57181
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Type: | Journal article |
Title: | Practical sensitive fluorescence sensing with microstructured fibres |
Author: | Schartner, E. White, R. Warren-Smith, S. Monro, T. |
Citation: | Proceedings of SPIE, 2009; 7503 |
Publisher: | SPIE - International Society for Optical Engineering |
Issue Date: | 2009 |
ISSN: | 0277-786X |
Editor: | Jones, J.D.C. |
Statement of Responsibility: | E. P. Schartner, R. T. White, S. C. Warren-Smith, and T. M. Monro |
Abstract: | We demonstrate a new detection limit for fluorescent species in small-core glass microstructured optical fibres. Two detection schemes are explored: forward detection by an optical spectrum analyser; and backward detection by a photodiode. In the second scheme, characterisation of the fluorescence signal during fibre filling allows us to accurately separate quantum-dot fluorescence from intrinsic glass fluorescence. The spectral overlap of these two fluorescence sources is the principal limit to the detection sensitivity. We demonstrate a detection limit of ∼200 pM. © 2009 SPIE. |
DOI: | 10.1117/12.835350 |
Published version: | http://dx.doi.org/10.1117/12.835350 |
Appears in Collections: | Aurora harvest 5 Physics publications |
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