ANALYSIS ON DESIGNED STRUCTURE OF PHOTONIC CRYSTAL WITH SPR SENSING METHOD

Abstract

In this research, we tend to investigate the surface plasmon resonance (SPR) sensing with a
designed structure of the single graphene sheet and multilayered metal oxide of aluminum oxide for
detection sensitivity through excitation wavelength based on air. The index of refraction (?) of air is 1.0.
The method implemented to investigate the structure by using the simulation time domain (FDTD). The
wavelength is set at 790 nm and 810nm (near-infrared region) to excite a transverse electric (TE) surface
plasmon polaritons by implementation of Kretschmann configuration. The numerical and analytical SPR
spectra were found to be in good agreement. Using air as the analyte, the reflection of incident angle for
aluminum oxide is 65° and 67.5°. Hence, graphene and aluminum oxide are suitable materials for formation
of SPR-based biosensor for biomedical applications.