Excitation and localization of surface plasmon polariton modes in metal-dielectric structures can be utilized to construct
unique nanophotonic materials and devices with tuneable optical transmission. We present selective polariton generator
(SPG) designs that demonstrate selective light transmission based on surface plasmon antennae principles. These
polarisation-sensitive structures can selectively generate and transport polaritons of a desired wavelength through
subwavelength apertures. By specifying geometry and orientation we can control the operational characteristics of these
elements. By varying SPG designs around a central nanohole we are able to achieve operation of nanophotonic devices
where optical transmission peak wavelengths are controlled via the polarisation state of the incident photons. The design
considerations of grating periods, corrugation fan angles, transmission due to inner ring variations, and spectral
separation of paired SPGs were investigated along with the potential of flanking the structures with Bragg reflector
corrugations. The simulations were compared with the experimental results for agreement of the models, which could
lead to experimental investigations of more complex structure.
Surface plasmon resonance (SPR) has been used for some time in chemical and biological sensors. Some of the schemes
for exciting surface plasmons include prisms and gratings. Grating-based optical SPR sensors have been demonstrated,
which use light intensity variations at resonance or wavelength interrogation. Recently, a gold grating made from a
commercial recordable compact disk was used for excitation of surface plasmons and SPR imaging. In this paper, we
present a new grating configuration that combines the benefits of multi-angle interrogation with interferometric
measurement techniques. This gives array sensing capability over a wide refractive index range. The set-up is based on
the gold grating of commercially available recordable compact disks, which are mass produced by injection-moulding,
resulting in low cost and disposable grating substrates. The potential of using this system for large sample number
analysis is demonstrated.
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