Abstract
Abstract In recent years, surface plasmon is very popular topics in the nano optics. The thesis is major to study the feature which the coupling of metal film with specific periodic structure and incident light with infrared wavelength. The structure with T-shaped array not only employs the coupling of two SPP modes at interfaces Ag/SiO2 but also use the silver bridge. Depend on the silver bridge we can get better characteristic for localizing surface plasmon polariton. Because of the specific structures we will also demonstrate the alignment technique in nanometer pattern generation system. The accuracy of alignment can be smaller than 50nm. In simulation the other characteristics also been developed by using the theory of RCWA. Finally in the experiment we successfully obtain a tunable narrow localized surface plasmon (LSPP) mode by using the structure.