Graphene-based terahertz waveguide modulators

Anno: 2015

Autori: Locatelli A., Town G., De Angelis C.

Affiliazione autori: Dipartimento di Ingegneria dell’Informazione, Università degli Studi di Brescia, Brescia BS, Italy; Department of Engineering, Macquarie University, North Ryde, NSW 2109. Australia

Abstract: We report two proof-of-principle designs of silicon terahertz (THz) modulators based on guiding structures wherein graphene is introduced to actively control the properties of the waveguides, thus tuning their transmissivity. Using well-established models to characterize the electromagnetic parameters of electrically-doped graphene, we estimate the theoretical performance of the proposed structures, in particular the required switching voltage and the achievable modulation depth. These results predict considerably improved performance with respect to the state-of-the-art of graphene THz modulators, together with reduced size and larger THz bandwidth.

Giornale/Rivista: IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY

Volume: 5 (3)      Da Pagina: 351  A: 357

Maggiori informazioni: This work was supported in part by the EU Graphene Flagship initiative under Project GRAPHATAR (GRAphene PHotonics Applications for Transmitters And Receivers).
Parole chiavi: Electro-optic modulators; graphene; THz antennas; arrays; and guided structures
DOI: 10.1109/TTHZ.2015.2416067

Citazioni: 22
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2022-06-26
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