1. Towards low-power near-infrared modulators operating at telecom wavelengths: when graphene plasmons frustrate their metallic counterparts
- Author
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Jérémy Lhuillier, Pierre Demongodin, Xavier Letartre, Philippe Regreny, Aziz Benamrouche, Malik Kemiche, Christelle Monat, Ségolène Callard, Pedro Rojo-Romeo, Thomas Wood, Bertrand Vilquin, INL - Nanophotonique (INL - Photonique), Institut des Nanotechnologies de Lyon (INL), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), INL - Hétéroepitaxie et Nanostructures (INL - H&N), INL - Plateforme Technologique Nanolyon (INL - Nanolyon), INL - Matériaux Fonctionnels et Nanostructures (INL - MFN), H2020 ERC project, European Project: 648546,H2020,ERC-2014-CoG,GRAPHICS(2015), Université de Lyon-École Supérieure de Chimie Physique Électronique de Lyon (CPE)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Lyon (ECL), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Materials science ,Physics::Optics ,02 engineering and technology ,Coupled mode theory ,7. Clean energy ,01 natural sciences ,law.invention ,010309 optics ,Resonator ,law ,0103 physical sciences ,Surface plasmon resonance ,[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics ,Plasmon ,Graphene ,business.industry ,Statistical and Nonlinear Physics ,021001 nanoscience & nanotechnology ,Surface plasmon polariton ,Atomic and Molecular Physics, and Optics ,Wavelength ,Excited state ,[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic ,Optoelectronics ,0210 nano-technology ,business - Abstract
International audience; A free-space electro-optic modulator device exploiting graphene's surface plasmon polariton (SPP) at near-infrared frequencies is proposed and theoretically studied. The device is made up of two resonant structures, the first being a metallic SPP displaying broadband absorption, and the second graphene's own SPP, which is shown to frustrate the metallic plasmon when excited, leading to a narrow reflectance peak. Doping of the graphene to achieve Fermi-level tuning is shown to shift the wavelength of the frustration phenomenon, thereby enabling the use of the device as a modulator. A reduction of 20% in the switching energy is expected due to the unique principle of operation which, crucially and contrary to most work in this field, does not rely on electroabsorption but electrorefraction changes in graphene. This coupled SPP resonator geometry also permits efficient channeling of optical energy from free space into graphene's SPP at near-infrared frequencies.
- Published
- 2020
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