The multi-reflection in the multi-layers circular polarization converter is led to the fabry-perot, jeopardizing the efficiency of the polarization converter. Sometimes, it is inconvenient to change the thickness of the dielectric layers. However, the thickness of the dielectric layer is some fixed value. A new method is put forward in this paper, that the middle layer of the metal strip is rotated; the fabry-perot is weakened to an acceptable level. The structure with rotated metal strip realizes a wide-band conversion from linear polarization to right circular polarization.
© 2016 Optical Society of AmericaPDF Article