Electrically tunable graphene polarization beam splitting utilizing Brewster effect. (18th January 2016)

• Record Type: Journal Article
• Authors: Tang, Y; Zhu, Z; Zhang, J; Guo, C; Yuan, X; Qin, S
• Is Part Of: Journal of optics. Volume 18:Number 2(2016:Feb.)
• Publication Date: 2016-01-18
• Subjects: graphene -- plasmon -- beam splitting -- Brewster effect; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/18/2/025002
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: We theoretically and numerically demonstrate that electrically tunable polarization beam splitting (PBS) can be realized by the structure of graphene ribbons supported on a dielectric film. The mechanism comes from the fact that the TE mode (like S wave polarization) is highly reflected by the plasmonic resonances of graphene ribbons, and the TM mode (like P wave polarization) is largely transmitted utilizing the Brewster effect. The results of full-wave numerical simulations reveal that a transmission splitting ratio of about 20 dB and a reflection splitting ratio of around 28 dB can be achieved with the Brewster angle incident. The proposed polarization beam splitting can be electrically tuned, which facilitates many practical applications.