Observation of coupled-cavity structures in metamaterials


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Caglayan H. , Bulu I., Loncar M., Ozbay E.

APPLIED PHYSICS LETTERS, vol.93, no.12, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 93 Issue: 12
  • Publication Date: 2008
  • Doi Number: 10.1063/1.2988286
  • Title of Journal : APPLIED PHYSICS LETTERS

Abstract

In this letter, we investigated the transmission properties of metamaterial based coupled-cavity structures. We first calculated the effective parameters of a split-ring resonator (SRR) and composite metamaterial (CMM) structures. Subsequently, we introduced coupled-cavity structures and presented the transmission spectrum of SRR and CMM based coupled-cavity structures. The splitting of eigenmodes was observed due to the interaction between the localized electromagnetic cavity modes. Finally, the dispersion relation and normalized group velocity of the coupled-cavity structures were calculated. The maximum group velocity was found to be 100 times smaller than the speed of light in vacuum. (C) 2008 American Institute of Physics.