Design of Linear-to-Circular Polarization Transformers Made of Long Densely Packed Metallic Helices
arXiv:cond-mat/0701118 · doi:10.1109/TAP.2007.915428
Abstract
In this work, we study the realization of realistic polarization transformers formed by long metallic helices. To this end, we propose a new homogenization model to characterize the propagation of electromagnetic waves in medium formed by infinitely long helices. We derive approximate analytical expressions for the effective permittivity, effective permeability and the magnetoelectric tensor of the composite material, taking into account the effects of spatial dispersion. We apply the new homogenization model to characterize novel linear-to-circular polarization transformers. Our results show that the metamaterial screen may be designed in such a way that an incoming linearly polarized wave may be transformed into a circularly polarized transmitted wave, and that the transmission efficiency of such polarization transformer may be as high as 95%. The theoretical results are supported by full wave simulations.
arXiv comment43 pages
References in corpus (7)
- Strong spatial dispersion in wire media in the very large wavelength limit
- Giant gyrotropy due to electromagnetic coupling
- Sub-wavelength imaging by wire media
- A Metamaterial Homogenization Approach with Application to the Characterization of Microstructured Composites with Negative Parameters
- Optical Nanotransmission Lines: Synthesis of Planar Left-Handed Metamaterials in the Infrared and Visible Regimes
- Sub-wavelength imaging at infrared frequencies using an array of metallic nanorods
- Additional Boundary Condition for the Wire Medium
Cited by in corpus (8)
- An advanced Jones calculus for the classification of periodic metamaterials
- Hyperbolic Weyl point in reciprocal chiral metamaterial
- Metallic helix array as a broadband wave plate
- Optical Tractor Beam with Chiral Light
- Single-Beam Optical Conveyor Belt for Chiral Particles
- Enhancement of Dual-Band Reflection-Mode Circular Polarizers Using Dual-Layer Rectangular Frequency Selective Surfaces
- Macroscopic Electromagnetic Response of Arbitrarily Shaped Spatially Dispersive Bodies formed by Metallic Wires
- Exploring spatial dispersion in helical wired media: An effective field theory approach