Tunable Electromagnetically Induced Transparency in Asymmetric Graphene-Based Metamaterial at Terahertz Region. Issue 212 (21st November 2020)

• Record Type: Journal Article
• Authors: Jiang, Jiuxing; Cui, Jifei; Fang, Ruiqian; Wu, Fengmin; Yang, Yuqiang
• Is Part Of: Integrated ferroelectrics. Issue 212(2020)
• Page Start: 1
• Page End: 8
• Publication Date: 2020-11-21
• Subjects: Graphene -- terahertz -- metamaterials -- tunable -- electromagnetically induced transparency; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2020.1728728
• Languages: English
• ISSNs: 1058-4587

Abstract

Abstract: We theoretically investigate the active control of electromagnetic induced transparency (EIT) in a terahertz graphene-based metamaterial, whose unit cell structure is composed two perpendicularly connected graphene cut-wires. The theoretical investigations and field distributions reveal that the EIT window arises from the destructive interference caused by asymmetric coupling between two cut-wire structures. Moreover, the strength and frequency of the EIT peak, the associated group delay and delay bandwidth product can be actively controlled. Therefore, the work presents a novel modulation strategy for controlling EIT behavior and exhibits potential applications for switching, modulation, and slow-light devices.