Mode propagation in optical nanowaveguides with dielectric cores and surrounding metal layers.
The mode spectrum in an optical nanowaveguide consisting of a dielectric-core layer surrounded by two identical metal layers is investigated. A simple model based on mode matching to predict the properties of mode propagation in such optical nanowaveguides is proposed. It is shown that quasi-TM00 and quasi-TM10 modes supported by an optical microstrip line do not have a cutoff frequency, regardless of the size of the metal strips, the thickness of the dielectric slab, and the cross-sectional shape. The transverse size of the TM00 mode supported by a nanosized microstrip line was found to be approximately equal to the transverse dimension of the microstrip line. In closed rectangular and elliptical nanowaveguides, i.e., in which all dielectric surfaces are covered with metal films, the cross-sectional shape of the waveguide should be stretched along one side to produce propagation conditions for the fundamental mode.
Lapchuk
Anatoly S
AS
Central Research and Development Institute, Samsung Electro-Mechanics Company, Ltd., Suwon 442-743, South Korea. alapchuk@yahoo.com
Shin
Dongho
D
Jeong
Ho-Seop
HS
Kyong
Chun Su
CS
Shin
Dong-Ik
DI
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008670:Metals / Q000737:chemistry*; D018613:Microscopy, Confocal / Q000295:instrumentation* / Q000379:methods; D008962:Models, Theoretical; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D055095:Optics and Photonics / Q000295:instrumentation*; D012542:Scattering, Radiation
D008670:Metals