Miniature optical fiber sensors using surface enhanced Raman spectroscopy (SERS) for remote biochemical sensing

Aditya H. Pandya (Login required)
Department of Physics, Ryerson University, Toronto, ON, Canada

Joseph C. Kumaradas
Department of Physics, Ryerson University, Toronto, ON, Canada

Alexandre Douplik
Department of Physics, Ryerson University, Toronto, ON, Canada
Institute for Biomedical Engineering, Science and Technology (iBEST), St. Michael’s hospital, Toronto, ON, Canada
Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Toronto, ON, Canada

Paper #3303 received 13 Nov 2018; revised manuscript received 26 Jan 2019; accepted for publication 27 Jan 2019; published online 9 Feb 2019. [Years in Optoacoustics: 70th Anniversary of Prof. Vladimir P. Zharov]

DOI: 10.18287/JBPE19.05.010301


In this study, we present facile fabrication of a miniaturized remote sensing SERS platform using highly tunable Nano-Sphere Lithography (NSL) technique. Using 200 μm diameter optical fibers with high numerical aperture (0.5NA), the SERS enhancement of remote sensing was found to be 98% of direct sensing configuration. Standard silica optical fibers were used for remote sensing using SERS without additional need of optical filtering to mitigate fluorescence and Raman background of these fibers which allows fabrication of miniaturized remote sensing platforms that can be used for remote biochemical sensing.


SERS; Plasmonics; Nanoparticles; Nanosphere lithography; Remote fiber sensing

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