Abstract

Visible light communication by white LED lights would be useful for communication and environmental sensing. A plasmonic spectral filter [1] based on a metal-insulator-metal (MIM) structure can be used for this purpose. (see Fig.1) Considering that absorption dips are numerically predicted for this MIM structures even with normal incidence and that change in the absorption dip is expected if either the refractive index or the thickness of the insulator layer changes, this structure could be used as a photonic device for environmental sensing as well as for visible light communication.

© 2016 Japan Society of Applied Physics, Optical Society of America