The canonical boundary-value problem of wave propagation guided by the planar interface of an isotropic homogeneous metal and a dielectric rugate filter with a refractive index that varies periodically normal to the interface may admit more than one solution, at a specific frequency. The different solutions indicate surface plasmon-polariton (SPP) waves that differ in phase speed, attenuation rate, linear polarization state, and field distribution. The multiplicity of SPP waves can only be attributed to the periodic nonhomogeneity of the rugate filter.
|Original language||English (US)|
|Number of pages||6|
|Journal||Journal of the Optical Society of America B: Optical Physics|
|State||Published - Nov 2010|
All Science Journal Classification (ASJC) codes
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics