Metamaterial/graphene active terahertz modulators

Degl'innocenti, Riccardo and Kindness, Stephen J. and Almond, Nikita W. and Michailow, Wladislaw and Braeuninger-Weimer, Philipp and Hofmann, Stephan and Beere, Harvey E. and Ritchie, David A. (2019) Metamaterial/graphene active terahertz modulators. In: 2019 IEEE MTT-S International Wireless Symposium, IWS 2019 - Proceedings :. 2019 IEEE MTT-S International Wireless Symposium, IWS 2019 - Proceedings . Institute of Electrical and Electronics Engineers Inc., CHN. ISBN 9781728107165

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Abstract

Within the last years there has been a tremendous thrust into research and technology in the THz spectral region (broadly defined as 0.1-10 THz) mainly driven by the unique potential where this radiation finds applications in, such as imaging, spectroscopy and communication. In all these fields a fast, integrated and versatile platform for modulating light is required. Metamaterial/graphene devices fulfill all these requirements as their subwavelength nature lends itself naturally to strong light-matter interaction, and therefore highly efficient and miniaturized devices. Graphene's unique properties, e.g. the large carrier concentration modulation, provide a large degree of compatibility with several architectures which can be exploited in a range of modulation or detection schemes. Finally, metamaterial/graphene devices realize a fast, versatile platform, which can be easily scaled to other frequencies, and adapted into amplitude, frequency, polarization and phase modulators, as well as integrated detectors, for the next generation of wireless-communication.