In this letter, we design a perfect field rotator that is by itself invisible and can rotate the electromagnetic (EM) wave front. The device here is designed for a dielectric background and is composed of merely an inner core with the same dielectric and an array of metal plates embedded in the air. Its broadband functionality is also numerically demonstrated.
H. Y. Chen and C. T. Chan, Appl. Phys. Lett. , 2007, 90: 241105 doi: 10.1063/1.2748302
19
M. Rahm, D. Schurig, D. A. Roberts, S. A. Cummer, D. R. Smith, and J. B. Pendry, Photon. Nanostruct. Fundam. Appl. , 2008, 6: 87 doi: 10.1016/j.photonics.2007.07.013
20
A. V. Kildishev and E. E. Narimanov, Opt. Lett. , 2007, 32: 3432 doi: 10.1364/OL.32.003432
21
H. Y. Chen, B. Hou, S. Chen, X. Ao, W. Wen, and C. T. Chan, Phys. Rev. Lett. , 2009, 102: 183903 doi: 10.1103/PhysRevLett.102.183903
22
Y. G. Ma, C. K. Ong, T. Tyc, and U. Leonhardt, Nat. Mater. , 2009, 8: 639 doi: 10.1038/nmat2489
23
N. Kundtz and D. R. Smith, Nat. Mater. , 2010, 9: 129 doi: 10.1038/nmat2610
24
C. Li, X. Meng, X. Liu, F. Li, G. Fang, H. Y. Chen, and C. T. Chan, Phys. Rev. Lett. , 2010, 105: 233906 doi: 10.1103/PhysRevLett.105.233906