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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 21 — Oct. 21, 2013
  • pp: 25565–25572

Rotatable illusion media for manipulating terahertz electromagnetic waves

XiaoFei Zang, Zhou Li, Cheng Shi, Lin Chen, Bin Cai, YiMing Zhu, Li Li, and XiaoBin Wang  »View Author Affiliations

Optics Express, Vol. 21, Issue 21, pp. 25565-25572 (2013)

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Based on composite optical transformation, we propose a rotatable illusion media with positive permittivity and permeability to manipulate terahertz waves, and a new way to realize singular parameter-independent cloaks when the incident wave with a certain width propagates from specific incident directions. The fundamental mechanism of this kind of cloak is that the illusion media can be able to avoid the incident wave interacting with the objects. Comparing with traditional transformation-coordinate-based cloaks such as cylindrical-shaped cloaks, our cloaks are independent of singular material parameters. Furthermore, this type of rotatable illusion media can be applied to design tunable miniaturized high-directivity antenna (a small antenna array covered with the rotatable illusion media appears like a large one and meanwhile, the radiation directions of the small antenna array is tunable via this rotatable illusion media). Full wave simulations are performed to confirm these points.

© 2013 Optical Society of America

OCIS Codes
(230.0230) Optical devices : Optical devices
(160.3918) Materials : Metamaterials
(260.2710) Physical optics : Inhomogeneous optical media

ToC Category:
Physical Optics

Original Manuscript: August 20, 2013
Revised Manuscript: September 20, 2013
Manuscript Accepted: September 20, 2013
Published: October 18, 2013

XiaoFei Zang, Zhou Li, Cheng Shi, Lin Chen, Bin Cai, YiMing Zhu, Li Li, and XiaoBin Wang, "Rotatable illusion media for manipulating terahertz electromagnetic waves," Opt. Express 21, 25565-25572 (2013)

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