Efficient Optical Reflection Modulation by Coupling Interband Transition of Graphene to Magnetic Resonance in Metamaterials
Abstract
Designing powerful electromagnetic wave modulators is required for the advancement of optical communication technology. In this work, we study how to efficiently modulate the amplitude of electromagnetic waves in near-infrared region, by the interactions between the interband transition of graphene and the magnetic dipole resonance in metamaterials. The reflection spectra of metamaterials could be significantly reduced in the wavelength range below the interband transition, because the enhanced electromagnetic fields from the magnetic dipole resonance greatly increase the light absorption in graphene. The maximum modulation depth of reflection spectra can reach to about 40% near the resonance wavelength of magnetic dipole, for the interband transition to approach the magnetic dipole resonance, when an external voltage is applied to change the Fermi energy of graphene.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 01, 2019
- Source ID
- 10.1186/s11671-019-3233-2
Entities
People
- Bo Liu
- Chaojun Tang
- Jing Chen
- Ping Gu
- Yiqun Ji
- Zhendong Yan
- Zhengqi Liu
Organizations
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province
- Office of Naval Research
- Zhejiang Provincial Natural Science Foundation