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arXiv · 1405.1495

Electro-optical graphene plasmonic logic gates

Kelvin J. A. Ooi·Hong Son Chu·Ping Bai·Lay Kee Ang
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Abstract

The versatile control of graphene's plasmonic modes via an external gate-voltage inspires us to design efficient electro-optical graphene plasmonic logic gates at the midinfrared wavelengths. We show that these devices are superior to the conventional optical logic gates because the former possess cut-off states and interferometric effects. Moreover, the designed six basic logic gates (i.e., NOR/AND, NAND/OR, XNOR/XOR) achieved not only ultracompact size lengths of less than λ/28 with respect to the operating wavelength of 10 μm, but also a minimum extinction ratio as high as 15 dB. These graphene plasmonic logic gates are potential building blocks for future nanoscale midinfrared photonic integrated circuits.

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Kelvin J. A. Ooi, Hong Son Chu, Ping Bai, Lay Kee Ang. 2014-05-07. Electro-optical graphene plasmonic logic gates. https://doi.org/10.1364/ol.39.001629

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