Issue |
EPL
Volume 117, Number 3, February 2017
|
|
---|---|---|
Article Number | 34002 | |
Number of page(s) | 4 | |
Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
DOI | https://doi.org/10.1209/0295-5075/117/34002 | |
Published online | 31 March 2017 |
Conformal cloaks from a function composition
1 College of Physics, Optoelectronics and Energy Soochow University - No. 1 Shizi Street, Suzhou 215006, China
2 Institute of Electromagnetics and Acoustics and Department of Electronic Science, Xiamen University Xiamen 361005, China
(a) ydxu@suda.edu.cn
(b) Kenyon@xmu.edu.cn
Received: 19 December 2016
Accepted: 15 March 2017
Since the beginning of transformation optics, invisibility cloaks have been attracting lots of attention, most of which however are usually too complex to realize. Here we propose a conformal cloak by using two mappings in a function composition. The required isotropic refractive index distribution is optimized to a range from 0 to 7.55, which is more feasible than previous designs. Numerical calculations have been performed to verify the cloaking effect.
PACS: 42.25.Fx – Diffraction and scattering / 78.67.Pt – Multilayers; superlattices; photonic structures; metamaterials / 41.20.Jb – Electromagnetic wave propagation; radiowave propagation
© EPLA, 2017
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