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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 22 — Nov. 15, 2012
  • pp: 4654–4656

Microwave collimation based on zero index metamaterials with Dirac point

Kai Fang, Yewen Zhang, Fangfei Li, Haitao Jiang, Yunhui Li, Wusong Wang, and Hong Chen  »View Author Affiliations


Optics Letters, Vol. 37, Issue 22, pp. 4654-4656 (2012)
http://dx.doi.org/10.1364/OL.37.004654


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Abstract

The microwave zero index metamaterials (ZIMs) can be realized by loading lumped elements into two-dimensional transmission lines (TLs) with Dirac cones whose linear dispersion can appear around the center of the Brillouin zone. Based on Snell’s law, the refracted angle of waves nearly equals zero when a point source radiates from the ZIM TL into the double positive (DPS) one in the ZIM-DPS TL structure. Experimental results demonstrate that at Dirac point the curved wavefronts in the ZIM region are transformed into planar ones in DPS region.

© 2012 Optical Society of America

OCIS Codes
(120.1680) Instrumentation, measurement, and metrology : Collimation
(160.3918) Materials : Metamaterials

ToC Category:
Materials

History
Original Manuscript: August 27, 2012
Revised Manuscript: October 2, 2012
Manuscript Accepted: October 3, 2012
Published: November 7, 2012

Citation
Kai Fang, Yewen Zhang, Fangfei Li, Haitao Jiang, Yunhui Li, Wusong Wang, and Hong Chen, "Microwave collimation based on zero index metamaterials with Dirac point," Opt. Lett. 37, 4654-4656 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-22-4654


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