WAVELENGTH-SELECTIVE LIGHT SENSOR AND SENSING METHOD USING THE SAME

摘要

An optical detection sensor includes a first interdigitated electrode; a second interdigitated electrode; and an optical conduction layer which is in contact with each of the first and second interdigitated electrodes. Due to incident light inputted into the optical conduction layer, surface plasmon polaritons can be excited on the interface between the first interdigitated electrode and optical conduction layer, and interface between the second interdigitated electrode and optical conduction layer. The optical absorption of the optical conduction layer can be amplified at a specific wavelength range due to the surface plasmon polaritons and a material which shows optical absorption in the corresponding wavelength range can be sensitively detected using the same.