Journal
OPTICAL MATERIALS EXPRESS
Volume 11, Issue 7, Pages 2192-2196Publisher
OPTICAL SOC AMER
DOI: 10.1364/OME.430547
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Funding
- Natural Sciences and Engineering Research Council of Canada [RGPIN-2017-03830]
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Gap plasmon structures hold promise for future ultrafast communication through simultaneous nanoscale integration of electromagnetic waves, nonlinear and optical-electrical conversion. The conventional notion of "smaller is better" for higher confinement is challenged when considering loss, but optimal performance may still require nanometer-scale gaps. To achieve widespread adoption, plasmonics may need to merge with emerging CMOS-like nanophotonics.
Gap plasmon structures could enable future ultrafast communication by allowing simultaneous nanoscale integration of electromagnetic waves, nonlinear and optical-electrical conversion, and providing a critical element often overlooked in this context: electrical contacts. Here, the fundamental limit of these structures is discussed, and it is argued that the conventional concept of smaller is better for higher confinement is not true when the loss is considered, but few nanometer gaps will be required to give the best performance. Overall, to achieve widescale adoption, plasmonics will likely have to combine forces with emerging CMOS-like nanophotonics. (c) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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