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Discrete Talbot effect in dielectric graphene plasmonic waveguide arrays
- Source :
- Carbon. 118:192-199
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- We theoretically predict and numerically simulate the discrete plasmonic Talbot effect in dielectric graphene plasmonic waveguide (DGPW) arrays at THz wavelengths. The super-modes in DGPW arrays are analyzed by using super-mode theory and the field intensity distributions in the designed DGPW arrays are explained by the superposition of different super-modes and simulated by using commercial software (COMSOL) based on finite element method (FEM). The discrete plasmonic Talbot effect is realized by superposition of different super-modes. The Talbot distance can be actively tuned by varying the Fermi energy of graphene and it decreases monotonically with increasing Fermi energy. In addition, it is found that the Talbot distance increases with the period of the DGPW arrays. Simulation results show a good agreement with the theoretical analysis.
- Subjects :
- Materials science
Graphene
business.industry
Terahertz radiation
Physics::Optics
Fermi energy
02 engineering and technology
General Chemistry
Dielectric
021001 nanoscience & nanotechnology
01 natural sciences
law.invention
Wavelength
Superposition principle
Optics
law
0103 physical sciences
Talbot effect
General Materials Science
010306 general physics
0210 nano-technology
business
Plasmon
Subjects
Details
- ISSN :
- 00086223
- Volume :
- 118
- Database :
- OpenAIRE
- Journal :
- Carbon
- Accession number :
- edsair.doi...........7ea86a4b0cfdd3fbc705e7b21c3b8b6a