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Type: Conference paper
Title: Sensitivity improvements of exposed-core microstructured optical fibre Bragg grating refractive index sensors
Author: Warren-Smith, S.
Monro, T.
Citation: Proceedings of SPIE, 2014 / LopezHiguera, J., Jones, J., LopezAmo, M., Santos, J. (ed./s), vol.9157, pp.91577S-1-91577S-4
Publisher: SPIE
Issue Date: 2014
Series/Report no.: Proceedings of SPIE
ISBN: 9781628411751
ISSN: 0277-786X
Conference Name: 23rd International Conference on Optical Fibre Sensors (2 Jun 2014 - 6 Jun 2014 : Santander, Spain)
Editor: LopezHiguera, J.
Jones, J.
LopezAmo, M.
Santos, J.
Statement of
S. C. Warren-Smith and T. M. Monro
Abstract: G. Tsiminis andFemtosecond laser written Bragg gratings have been written in various exposed-core microstructured optical fibres (ECMOFs) for the first time. The EC-MOFs have different core diameters ranging from 2.7 micrometers to 12.5 micrometers and offer different degrees of core access depending on application requirements. Writing a Bragg grating on an open core fibre allows for refractive index based sensing, with a view to multiplexed biosensing. Smaller core fibres are shown both experimentally and theoretically to provide a higher sensitivity, with experimental sensitivities demonstrated up to 6.4 nm/RIU over the refractive index range from 1.333 (water) to 1.377 (isopropanolexperiments).
Keywords: Microstructured optical fibres; fibre fabrication; Bragg grating sensors; label-free biosensing
Rights: © 2014 SPIE
DOI: 10.1117/12.2059161
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