Gain assisted propagation of surface plasmon polaritons on planar metallic waveguides.

نویسندگان

  • Maziar Nezhad
  • Kevin Tetz
  • Yeshaiahu Fainman
چکیده

The propagation of surface plasmon polaritons on metallic waveguides adjacent to a gain medium is considered. It is shown that the presence of the gain medium can compensate for the absorption losses in the metal. The conditions for existence of a surface plasmon polariton and its lossless propagation and wavefront behavior are derived analytically for a single infinite metal-gain boundary. In addition, the cases of thin slab and stripe geometries are also investigated using finite element simulations. The effect of a finite gain layer and its distance from the SPP waveguide is also investigated. The calculated gain requirements suggest that lossless gainassisted surface plasmon polariton propagation can be achieved in practice.

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عنوان ژورنال:
  • Optics express

دوره 12 17  شماره 

صفحات  -

تاریخ انتشار 2004