Analogue of electromagnetically induced absorption with double absorption windows in a plasmonic system

PLoS One. 2017 Jun 29;12(6):e0179609. doi: 10.1371/journal.pone.0179609. eCollection 2017.

Abstract

We report the observation of an analog of double electromagnetically induced absorption (EIA) in a plasmonic system consisting of two disk resonators side-coupled to a discrete metal-insulator-metal (MIM) waveguide. The finite-difference time-domain (FDTD) simulation calculations show that two absorption windows are obtained and can be easily tuned by adjusting the parameters of the two resonance cavities. The consistence between the coupled-model theory and FDTD simulation results verify the feasibility of the proposed system. Since the scheme is easy to be fabricated, our proposed configuration may thus be applied to narrow-band filtering, absorptive switching, and absorber applications.

MeSH terms

  • Electromagnetic Fields*
  • Models, Theoretical

Grants and funding

This work was supported by the National Natural Science Foundation of China (NSFC) under Grant Nos. 61275059, 11374107, 61475049, 11674109 and the Natural Science Foundation of Guangdong Province, China under Grant Nos. 2016A030313851, 2016A030313443.