Novel complex modes in asymmetrical nanoscale plasmonic waveguides.
Highly asymmetrical plasmonic waveguides exhibit guiding even below the expected cut-off dimensions. A new family of discrete complex guided modes of asymmetrical waveguides with losses--which may assist in nano plasmonic guiding, is found by employing the effective index method. These modes having a real effective index lower than the substrate index of refraction can be exhibited also in regular (lossy) photonics.
Berkovitch
Nikolai
N
EE Department, Technion, Haifa 32000, Israel. nikolaib@tx.technion.ac.il
Orenstein
Meir
M
Lipson
Stephen G
SG