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Tailoring the phase and power flow of electromagnetic fields
1Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109-2122, USA.
Physical Review Letters
|January 31, 2014
Summary
This study introduces a novel method to control electromagnetic fields using engineered 2D anisotropic media. This enables precise tailoring of wave propagation and power flow for advanced optical and electromagnetic devices.
Area of Science:
- Electromagnetics and Optics
- Materials Science
Background:
- Controlling electromagnetic fields is crucial for advanced device design.
- Existing methods often lack precise control over phase and power flow.
- Anisotropic materials offer unique electromagnetic properties.
Purpose of the Study:
- To introduce a method for arbitrary control of electromagnetic fields.
- To design a 2D inhomogeneous, anisotropic medium for tailored field control.
- To enable independent tailoring of field phase and amplitude.
Main Methods:
- Utilizing plane-wave relations in anisotropic media.
- Employing an impedance matching process to determine material parameters.
- Developing a formulation for independent control of phase and amplitude.
Main Results:
- A method for arbitrary control of phase progression and power flow is presented.
- Design of a 2D inhomogeneous, anisotropic medium is described.
- The formulation allows independent tailoring of field phase and amplitude profiles.
Conclusions:
- The developed method offers precise control over electromagnetic fields.
- This technique is applicable to designing guiding structures and radiating apertures.
- Enables novel applications in optics and electromagnetics.
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