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Open AccessArticle

Tuning Plasmon Induced Reflectance with Hybrid Metasurfaces

1
Photonics Laboratory, Tampere University, 33720 Tampere, Finland
2
Department of Electronic Engineering, Balochistan University of Information Technology, Engineering and Management Sciences, Quetta 87300, Pakistan
3
Nanotechnology Research Center, Bilkent University, 06800 Ankara, Turkey
*
Author to whom correspondence should be addressed.
This paper is an extended version of Habib, M.; Ozbay, E.; Caglayan, H. Tunable Reflection Type Plasmon Induced Transparency with Graphene. In Proceedings of the 2018 12th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), Espoo, Finland, 27 August–1 September 2018.
Photonics 2019, 6(1), 29; https://doi.org/10.3390/photonics6010029
Received: 14 February 2019 / Revised: 12 March 2019 / Accepted: 14 March 2019 / Published: 16 March 2019
Electrically tunable metasurfaces with graphene offer design flexibility to efficiently manipulate and control light. These metasurfaces can be used to generate plasmon-induced reflectance (PIR), which can be tuned by electrostatic doping of the graphene layer. We numerically investigated two designs for tunable PIR devices using the finite difference time-domain (FDTD) method. The first design is based on two rectangular antennas of the same size and a disk; in the second design, two parallel rectangular antennas with different dimensions are used. The PIR-effect was achieved by weak hybridization of two bright modes in both devices and tuned by changing the Fermi level of graphene. A total shift of ∼362 nm was observed in the design with the modulation depth of 53% and a spectral contrast ratio of 76%. These tunable PIR devices can be used for tunable enhanced biosensing and switchable systems. View Full-Text
Keywords: plasmonics; surface plasmon; tunable metasurfaces plasmonics; surface plasmon; tunable metasurfaces
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Habib, M.; Ozbay, E.; Caglayan, H. Tuning Plasmon Induced Reflectance with Hybrid Metasurfaces. Photonics 2019, 6, 29.

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