The Green's function method for metal-dielectric-metal SPP waveguide network
School of Physics Science and Engineering, Tongji University - Shanghai 200092, China
Received: 14 May 2013
Accepted: 22 June 2013
The Green's function method is extended to deal with the propagation problem of surface plasmon polaritons (SPPs) in metal-dielectric-metal (MDM) waveguide network, which is a new application area involving discontinuous impedance and complex architecture. By employing the Green's function method, the spatial distributions of the magnitude and phase of field in the network waveguide are obtained analytically. The agreement with the numerical simulations confirms that this approach can completely describe the transmission properties of SPP in MDM waveguide and readily apply to the network structure, thus it can serve as an easy-performance analytic approach for a deeper understanding and further application of the SPP waveguide network.
PACS: 71.45.Gm – Exchange, correlation, dielectric and magnetic response functions, plasmons / 42.82.Et – Waveguides, couplers, and arrays / 78.67.Pt – Multilayers; superlattices; photonic structures; metamaterials
© EPLA, 2013