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arXiv · 1308.5043

Broadband light coupling to dielectric slot waveguides with tapered plasmonic nanoantennas

Ivan S. Maksymov·Yuri S. Kivshar
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Abstract

We propose and theoretically verify an efficient mechanism of broadband coupling between incident light and on-chip dielectric slot waveguide by employing a tapered plasmonic nanoantenna. Nanoantenna receives free space radiation and couples it to a dielectric slot waveguide with the efficiency of up to 20% in a broad spectral range, having a small footprint as compared with the currently used narrowband dielectric grating couplers. We argue that the frequency selective properties of such nanoantennas also allow for using them as ultrasmall on-chip multiplexer/demultiplexer devices.

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Ivan S. Maksymov, Yuri S. Kivshar. 2013-08-23. Broadband light coupling to dielectric slot waveguides with tapered plasmonic nanoantennas. https://doi.org/10.1364/ol.38.004853

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