The DEM accuracy, analyzed both at the point mode and the surface mode, produced good results (Murthy et al. 2008).
When h tends to be 0, the grating became too thin to excite the surface mode.
The surface mode can be guided by the multilayers structure and represents some unexpected properties.
Significant efforts have been placed in upgrading the system to initiate the surface mode operation.
The position of the surface mode inside the bandgap can be altered by tuning the thickness of this layer.
The dispersion relation of the surface mode for multilayers is deduced and the corresponding characteristic parameters are computed.
In this paper, the surface mode existing on the surface of the meta-material structure composed of alternate layers of metal and dielectric material is studied.
To extend the frequency range of SPP mode, the surface mode guided by metal/dielectric multilayers meta-material has been studied based on the theory of electromagnetic field.
This provides a better control of the optical properties of the surface mode, such as high propagation length or tight confinement to the surface.
Experimental results are presented that illustrate sensing action by measuring the shift in the surface mode coupling angle with surface loading.
