Next Article in Journal
Combination Design of Time-Dependent Magnetic Field and Magnetic Nanocomposites to Guide Cell Behavior
Previous Article in Journal
Controlled Sputtering Pressure on High-Quality Sb2Se3 Thin Film for Substrate Configurated Solar Cells
Previous Article in Special Issue
Facile and Reliable Thickness Identification of Atomically Thin Dichalcogenide Semiconductors Using Hyperspectral Microscopy
Open AccessArticle

Electrical Phase Control Based on Graphene Surface Plasmon Polaritons in Mid-infrared

Key Laboratory for Wide Band Gap Semiconductor Materials and Devices of Education Ministry, School of Microelectronics, Xidian University, Xi’an 710071, China
Beijing Smart-Chip Microelectronics Technology Co., Ltd. Beijing 100192, China
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(3), 576;
Received: 7 February 2020 / Revised: 19 March 2020 / Accepted: 20 March 2020 / Published: 22 March 2020
(This article belongs to the Special Issue 2D Materials and Their Heterostructures and Superlattices)
Phase modulation of light is the core of many optoelectronic applications, such as electro-optic switch, sensors and modulators. Graphene Surface plasmon polaritons (SPPs) exhibit unique properties in phase modulation including dynamic tunability, a small driving voltage and small device size. In this paper, the novel phase modulation capability of graphene SPPs in mid-infrared are confirmed through theory and simulation. The results show that graphene SPPs can realize continuous tuning of the phase shift at multiple wavelengths in mid-infrared, covering the phase range from 0° to 360°. Based on these results, a sandwich waveguide structure of dielectric–graphene–dielectric with a device length of 800 nm is proposed, which shows up to 381° phase modulation range at an operating wavelength of 6.55 µm, given a 1 V driving voltage. In addition, the structure size is much shorter than the wavelength in mid-infrared and can realize sub-wavelength operation. This work paves the way to develop graphene-based tunable devices for mid-infrared wave-front control. View Full-Text
Keywords: grapheme surface plasmon polaritons; phase modulation; Mid-infrared grapheme surface plasmon polaritons; phase modulation; Mid-infrared
Show Figures

Figure 1

MDPI and ACS Style

Wang, Y.; Liu, H.; Wang, S.; Cai, M.; Zhang, H.; Qiao, Y. Electrical Phase Control Based on Graphene Surface Plasmon Polaritons in Mid-infrared. Nanomaterials 2020, 10, 576.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop