Negative group velocities in metal-film optical waveguides

Negative group velocities in metal-film optical waveguides

It is demonstrated that the group velocity of the frustrated transverse magnetic modes in an optical waveguide including a metal is negative when the power flow inside the metal is larger than the power flow inside the dielectric medium, while the phase velocity remains positive. The energy and the...

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Veröffentlicht in:Optics communications 1997-04, Vol.137 (1), p.41-45
Hauptverfasser: Tournois, Pierre, Laude, Vincent
Format: Artikel
Sprache:eng
Schlagworte:
Metal-film optical waveguides
Optical waveguides
Optics
Physics
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Zusammenfassung:It is demonstrated that the group velocity of the frustrated transverse magnetic modes in an optical waveguide including a metal is negative when the power flow inside the metal is larger than the power flow inside the dielectric medium, while the phase velocity remains positive. The energy and the phase are then contrapropagating.
ISSN:0030-4018
1873-0310
DOI:10.1016/S0030-4018(96)00767-5