The usefulness of high absorbance in photodetectors, IR Imaging and thermal emitters, motivates us to trap light in the dielectric film The coupling between surface phonon polaritons at the air dielectric interface and surface plasmon polaritons at the metal dielectric interface results the strong confinement of the electric field in the dielectric film.
A surface plasmon resonance (SPR) based fiber optic biosensor has been fabricated and characterized for the detection of
blood glucose. Optical fiber sensor was fabricated by first coating a 50 nm thick gold film on the bare core of optical
fiber and then immobilizing glucose oxidase (GOx) over it. Aqueous glucose solutions of different concentrations were
prepared. To mimic the blood glucose levels, the concentration of glucose solutions were kept equal to that in human
blood. The refractive indices of these sample solutions were equal to that of water up to third decimal place. SPR spectra
for the sensor were recorded for these glucose solutions. When the glucose comes in contact to glucose oxidase,
chemical reactions take place and as a result, the refractive index of the immobilized GOx film changes, giving rise to a
shift in the resonance wavelength. Unlike electrochemical sensors, the present sensor is based on optics and can be
miniaturized because of optical fiber. The present study provides a different approach for blood glucose sensing and may
be commercialized after optimization of certain parameters.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.