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Journal Articles Scientific Reports Year : 2017

3D field-shaping lens using all-dielectric gradient refractive index materials

Tongyu Ding
  • Function : Author
Jianjia Yi
  • Function : Author
Haoyu Li
  • Function : Author
Hailin Zhang
  • Function : Author

Abstract

Abstract A novel three-dimensional (3D) optical lens structure for electromagnetic field shaping based on spatial light transformation method is proposed at microwave frequencies. The lens is capable of transforming cylindrical wavefronts into planar ones, and generating a directive emission. Such manipulation is simulated and analysed by solving Laplace’s equation, and the deformation of the medium during the transformation is theoretically described in detail. The two-dimensional (2D) design method producing quasi-isotropic parameters is further extended to a potential 3D realization with all-dielectric gradient refractive index metamaterials. Numerical full-wave simulations are performed on both 2D and 3D models to verify the functionality and broadband characteristics of the calculated lens. Far-field radiation patterns and near-field distributions demonstrate a highly radiated directive beam when the lens is applied to a conical horn antenna.
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Origin : Publication funded by an institution

Dates and versions

hal-04215689 , version 1 (15-01-2024)

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Tongyu Ding, Jianjia Yi, Haoyu Li, Hailin Zhang, Shah Nawaz Burokur. 3D field-shaping lens using all-dielectric gradient refractive index materials. Scientific Reports, 2017, 7 (1), pp.782. ⟨10.1038/s41598-017-00681-z⟩. ⟨hal-04215689⟩
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