Efficient terahertz electro-absorption modulation employing graphene plasmonic structures
Mesoscale and Nanoscale Physics
2015-06-12 v1
Abstract
We propose and discuss terahertz electro-absorption modulators based on graphene plasmonic structures. The active device consists of a self-gated pair of graphene layers, which are patterned to structures supporting THz plasmonic resonances. These structures allow for efficient control of the effective THz optical conductivity, thus absorption, even at frequencies much higher than the Drude roll-off in graphene where most previously proposed graphene-based devices become inefficient. Our analysis shows that reflectance-based device configurations, engineered so that the electric field is enhanced in the active graphene pair, could achieve very high modulation-depth, even ~100%, at any frequency up to tens of THz.
Cite
@article{arxiv.1211.4176,
title = {Efficient terahertz electro-absorption modulation employing graphene plasmonic structures},
author = {Berardi Sensale-Rodriguez and Rusen Yan and Mingda Zhu and Debdeep Jena and Lei Liu and Huili Grace Xing},
journal= {arXiv preprint arXiv:1211.4176},
year = {2015}
}