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Title

Nanoimprinting on optical fiber end faces for chemical sensing

Author(s)

Kostovski, Gorgi;  White, Daniel J.;  Mitchell, Arnan;  Austin, Michael W.;  Stoddart, Paul R.

Abstract

Optical fiber surface-enhanced Raman scattering (SERS) sensors offer a potential solution to monitoring low chemical concentrations in-situ or in remote sensing scenarios. We demonstrate the use of nanoimprint lithography to fabricate SERS-compatible nanoarrays on the end faces of standard silica optical fibers. The antireflective nanostructure found on cicada wings was used as a convenient template for the nanoarray, as high sensitivity SERS substrates have previously been demonstrated on these surfaces. Coating the high fidelity replicas with silver creates a dense array of regular nanoscale plasmonic resonators. A monolayer of thiophenol was used as a low concentration analyte, from which strong Raman spectra were collected using both direct endface illumination and through-fiber interrogation. This unique combination of nanoscale replication with optical fibers demonstrates a high-resolution, low-cost approach to fabricating high-performance optical fiber chemical sensors.

Publication type

Conference poster

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Atom Optics and Ultrafast Spectroscopy

Source

Proceedings of SPIE: 19th International Conference on Optical Fibre Sensors: Poster Session I, Perth, Western Australia, Australia, 14-18 April 2008, Vol. 7004, paper no. 70042H

Publication year

2008

Keyword(s)

Anti-reflection;  H-PDMS;  Nanoimprint;  Optical fiber;  Plasmon;  SERS;  SU-8;  Surface-enhanced Raman scattering

Publisher

SPIE

ISBN

9780819472045

Publisher URL

http://dx.doi.org/10.1117/12.785975

Copyright

Copyright © 2008 Society of Photo-Optical Instrumentation Engineers. This paper was originally published in the proceedings of SPIE (Vol. 7004), and is available from: http://dx.doi.org/10.1117/12.785975. The published version of the paper is reproduced here in accordance with the copyright policy of the publisher. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Full text

Peer reviewed