View-field compressor based on transformation optics

On the basis of transformation optics, we propose a view-field compressor for propagating beam fields. The device can compress the view field of 0 to 2π azimuthal angles into a given angle zone, for example π angle. We derive the required material of the compressor in the cylindrical coordinate syst...

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Bibliographic Details
Published inOptik (Stuttgart) Vol. 178; pp. 167 - 171
Main Authors Yu, Zhenzhong, Wang, Yuehong, Yang, Zhong, Zhao, Guoshu
Format Journal Article
LanguageEnglish
Published Elsevier GmbH 01.02.2019
Subjects
Anisotropic optical materials
Metamaterial
Transformation optics
Transformation optics
Anisotropic optical materials
Metamaterial
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Summary:On the basis of transformation optics, we propose a view-field compressor for propagating beam fields. The device can compress the view field of 0 to 2π azimuthal angles into a given angle zone, for example π angle. We derive the required material of the compressor in the cylindrical coordinate system with anisotropic and inhomogeneous distribution of constitutive parameters. The functionality of the view-field compression is validated by full-wave electromagnetic simulations with several line sources located respectively in different azimuthal angles in the outer space. Moreover, when the radiation direction of a line source is restricted in some cases, for example sheltered by a perfect electric conducting (PEC) slab, this device can enlarge the beam directivity with omnidirectional performance.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2018.09.142