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An integrated sensor based on vertical coupler composed of short range surface plasmon polariton waveguide and SiNx waveguide has been realized, which is potential for ultra-thin layer detecting with rather high sensitivity.
A hybrid coupler comprised of a slot plasmonic waveguide and a dielectric waveguide is proposed and its coupling characteristics were analyzed. The simulation results show that the slot plasmonic mode can be excited efficiently by the dielectric waveguide mode and a highly integrated refractive index sensor could be realized.
Long range surface plasmon strip waveguide with low refractive index dielectric buffer layers is proposed in this paper. Simulation results show that ultra low propagation loss can be obtained.
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