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Opt Lett. 2006 Jul 15;31(14):2133-5.

Subwavelength confinement in an integrated metal slot waveguide on silicon.

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  • 1School of Electrical and Computer Engineering, Cornell University, Ithaca, NY 14853, USA.


We demonstrate propagation losses of less than 0.8 dB/microm in a metal slot waveguide on silicon with a predicted confinement substantially below the optical wavelength (approximately 1.55 microm). We also show compact and efficient coupling of the high-confinement metal slot waveguide with a standard silicon dielectric waveguide with a coupling efficiency of approximately 2.5 dB per facet.

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