We have studied the relationship between internal-surface plasmon polaritons and negative permeability in cascaded patterned metallic layers. By properly selecting the dielectric thicknesses of the multilayer structure, the negative effective index can broaden which could be of potential use in the design of metamaterials. The excitations of cladding modes are also shown to cause extraordinary light transmission. Several subwavelength hole arrays are fabricated and characterized showing extraordinary light transmission peaks. With the presented results we hope to extend the potential of these structures for use in modern developing applications.
展开▼
