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Abstract
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Nowadays, graphene has many applications in optical instruments, biosensors, gassensors,
photovoltaic cells, and so on. In this study, we aimed at investigating the
optical properties of graphene under the influence of plasmons created in onedimensional
photonic crystal structure by making use of the absorption spectrum. We
put the gold photonic crystal in adjacent to graphene and placed an antireflection layer
on top of it. Then we studied the behavior of graphene absorption peaks in nearinfrared
region. By analyzing the graphene behavior in this region, we observed that
graphene absorption was increased up to 40% and graphene absorption value in
absorption peak, absorption peak wavelength, absorption spectra width and also its
absorption spectra in a wide of wavelength range from 1000 to 2500 nm, could be
controlled by making use of different factors such as the substance of antireflection
layer and photonic crystal geometric dimensions. This structure can make many
applications possible for graphene such as using it to build biosensors to identify uric
acid and some of the lipids that have specific significances in detecting atherosclerotic
lesions as well as diagnosing the states of disease.
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