Open AccessStudy of positive and negative gradient refractive index alternant surface
Author(s) -
Xiaobo Liu,
Liu Ming-Li,
Jianzhong Chen,
Haiyang Shi,
Bo Chen,
Yansheng Jiang,
Zhifei Xu,
Anxue Zhang
Publication year - 2015
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.084202
Subject(s) - refractive index , polarization (electrochemistry) , physics , scattering , optics , electromagnetic radiation , computational physics , computer simulation , mechanics , chemistry
In this paper, we design a kind of positive and negative gradient refractive index alternating surface and discuss its physical mechanism by the geometrical optics method and the numerical simulation of electromagnetic field. This structure can control the propagation of electromagnetic waves by adjusting some parameters such as refractive gradient. Under certain parameters, electromagnetic waves from space can be confined mainly in the media all the time, or are released into the space after propagating a certain distance in the media. This structure is polarization-independent and wide-band. It means that this structure can be used as a stealth surface by reducing the scattering cross section. Finally, the characteristics of the structure are verified by the numerical simulation.