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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 24 — Aug. 20, 2011
  • pp: 4798–4804

Bilayer fractal structure with multiband left-handed characteristics

Qiujiao Du, Jinsong Liu, Hongwu Yang, and Xunong Yi  »View Author Affiliations

Applied Optics, Vol. 50, Issue 24, pp. 4798-4804 (2011)

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We present a bilayer fractal structure for the realization of multiband left-handed metamaterial at terahertz frequencies. The structure is composed of metallic H-fractal pairs separated by a dielectric layer. The electromagnetic properties of periodic H-fractal pairs have been investigated by numerical simulation. The period in the propagation direction is extremely small as compared to the wavelength at the operational frequency. Under the electromagnetic wave normal incidence, the material exhibits negative refraction simultaneously around the frequencies of 0.10 and 0.15 THz for parallel polarization, and around the frequencies of 0.19 and 0.38 THz for perpendicular polarization. The design provides a left-handed metamaterial suitable for multiband and compact devices at terahertz frequencies.

© 2011 Optical Society of America

OCIS Codes
(260.5740) Physical optics : Resonance
(160.3918) Materials : Metamaterials

ToC Category:

Original Manuscript: March 21, 2011
Revised Manuscript: June 20, 2011
Manuscript Accepted: July 4, 2011
Published: August 16, 2011

Qiujiao Du, Jinsong Liu, Hongwu Yang, and Xunong Yi, "Bilayer fractal structure with multiband left-handed characteristics," Appl. Opt. 50, 4798-4804 (2011)

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