LAUSR

Abstract Nowadays, planar structures are more common in the field of telecommunications in comparison with bulk metamaterial structure, not only for their lossless properties but also for their negligible dispersion coefficient. These two important features are available because of the metasurface thin layer and its small propagation length. In this paper, a novel metasurface is proposed with the application of circular to circular polarization conversion with at least 50% of polarization conversion ratio in a wavelength band from 1400 to 1700 nm. By using GaAs in the structure, our goal to have a tinier structure has been achieved because of its large refractive index. Also, the performance of our proposed work shows significant stability in the case of both theta and phi incident angles variations. By changing the incident wave angle from 0 to about 15 degrees (theta) and from 0 to 90 degree (phi) the stability of the conversion has been available. Finally, by using the PSO algorithm, the final optimized measures have been achieved.