Metal stripe waveguides in silica, operating in the fundamental long-range mode and at optical free-space wavelengths near 1550nm, are discussed in detail. Straight and curved waveguides having various stripe geometries are modeled. Au, Ag, and Al are compared as metals for the stripe. The wavelength response of waveguides is computed. The impact of index asymmetry is determined and discussed. The results generated and collected herein should be useful to the design of low-loss metal stripe waveguides for integrated plasmonic applications in silica and cladding materials of comparable index.
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Pierre Berini (2007) studied this question.
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