CST – Computer Simulation Technology

Title:
Dielectric inspired scaling of polarization conversion subwavelength resonances in open ultrathin chiral structures
Author(s):
Andriy E. Serebryannikov, Mehmet Mutlu, E. Ozbay
Source:
Appl. Phys. Lett. 107
Vol./Issue/Date:
1st January 0001
Year:
2016
Page(s):
pp. 1 - 6
Abstract:
It is shown that the scaling of subwavelength resonances in open ultrathin chiralstructures can be obtained by varying only the permittivity of dielectric spacers, while multiband one-way polarization conversion and related asymmetric transmission remain possible. These features are quite general and obtainable in a wide range of parameter variation. Surprisingly, the difference in the power of e for the classical e-1/2e-1/2 scaling rule and the empirical rules obtained in the present letter does not exceed 22%, giving an important entry point for future theoretical studies and design strategies. Both spectral scaling and conservation of the polarization characteristics can be achieved by using either tunneling or real-index impedance matching. The scaled structures with strong polarization and directional selectivity may have thickness of ?/100?/100 and smaller
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