Journal of Physics A: Mathematical and General.
Vol. 26.
1993.
P. 1775-1782
The article gives a mathematical analysis of the dispersion equation for surface electromagnetic waves (SEWs) in an insulator-metal-insulator (IMI) structure. Approximate formulas are obtained that enable one to calculate the wavenumbers of long-range and short-range SEWs propagating in symmetric and asymmetric planar IMI structures. The domain of existence of long-range SEWs has been established.