Arbitrary bending of electromagnetic waves using realizable inhomogeneous and anisotropic materials.
We propose an optical transformation to bend electromagnetic waves by designing proper inhomogeneous and anisotropic materials, which are hereinafter referred to as metamaterials (MTMs). When the waveguide bends are filled with MTMs, the incident waves will pass through the bends without any reflections (for full-parameter MTMs) or with very small reflections (for simplified-parameter MTMs). When MTMs are placed in air, the incident waves will be bent to any designed directions. We also discuss the wave bending using layered homogeneous uniaxial MTMs, which can be easily realized using artificial structures.
Jiang
Wei Xiang
WX
State Key Laboratory of Millimeter Waves, Institute of Target Characteristics and Identification, Department of Radio Engineering, Southeast University, Nanjing 210096, People's Republic of China.
Cui
Tie Jun
TJ
Zhou
Xiao Yang
XY
Yang
Xin Mi
XM
Cheng
Qiang
Q