Magnetically controllable unidirectional electromagnetic waveguiding devices designed with metamaterials
Applied Physics Letters2010Vol. 97(20)
Citations Over TimeTop 10% of 2010 papers
Abstract
We demonstrate a sharply asymmetric reflection in a geometrically symmetric magnetic metamaterial (MM) system, which originates from the coupling of electromagnetic (EM) wave to magnetic surface plasmon resonance states and the broken time reversal symmetry in MM. Based on this effect, we have designed unidirectional EM waveguide, wave bender, and beam splitter. Our simulations indicate that the designs possess the merits of robustness against strong defect and disorder, controllability with an external magnetic field, in addition to the finite working bandwidth and the high transmission efficiency.
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