Here we report the optical absorptance of metallic grating coupled to the one-dimensional photonic crystal layers to investigate the multiple surface Plasmon polariton waves and waveguide modes. Our dielectric photonic crystal was made by electron gun deposition method onto the Aluminium thin film on the polycarbonate grating. These surface Plasmon polariton waves at the interface of metallic grating are very sensitive to the polar incidence angles which can be used to the light trapping for solar cell applications.

Keywords: One- dimensional photonic crystal, Surface Plasmon polariton, metallic grating, waveguide modes.

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