Abstract
We analyzed and experimentally tested a metal–dielectric composite waveguide structure. After coating the surface of the metal layer in the Kretschmann attenuated total internal reflection configuration with a dielectric layer, we explain the coupling of incident light into the coated layer. After finding the dispersion relationships for the layered media including the metal–dielectric composite waveguide, we can determine a solution for its existance in a complex domain. By inscribing a periodic grating structure in the dielectric layer of the metal–dielectric composite waveguide, we experimentally verify the coupling of incident light on the metal–dielectric composite waveguide structure and propose its application for use as a wavelength-band selection filter.
© 2009 Optical Society of America
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