Nanostructured optical fibre for surface-enhanced Raman scattering sensing

Daniel J. White; Alex P. Mazzolini; Paul R. Stoddart

doi:10.1117/12.797582

24 September 2008 Nanostructured optical fibre for surface-enhanced Raman scattering sensing

Daniel J. White, Alex P. Mazzolini, Paul R. Stoddart

Proceedings Volume 7102, Optical Fabrication, Testing, and Metrology III; 710202 (2008) https://doi.org/10.1117/12.797582
Event: Optical Systems Design, 2008, Glasgow, Scotland, United Kingdom

Abstract

Surface-enhanced Raman scattering (SERS) is a powerful spectroscopic tool for detecting low concentrations of many substances. The SERS effect occurs when a Raman active molecule is in contact with a metal surface having nanoscale features. While common SERS surfaces are formed on planar substrates, we present a technique whereby the surface is fabricated on the tips of custom designed optical fibres. The fibre presented is based on a modified imaging fibre which consists of a bundle of thousands of micron-sized individual optical fibres fused together in a coherent bundle. The fibre is then drawn such that each pixel is reduced to a nanoscale size. When chemically etched, the cores of the drawn pixels are eroded leaving an array of nanostructured wells. These are then coated with a thin layer of silver to enable SERS functionality. The design of the fibre, the manufacturing and etching processes and the characterisation of the SERS functionality will be presented.

Citation Download Citation

Daniel J. White, Alex P. Mazzolini, and Paul R. Stoddart "Nanostructured optical fibre for surface-enhanced Raman scattering sensing", Proc. SPIE 7102, Optical Fabrication, Testing, and Metrology III, 710202 (24 September 2008); https://doi.org/10.1117/12.797582

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