Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume 28, Issue 6, Pages 1573-1577Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.28.001573
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Funding
- National Natural Science Foundation of China (NSFC) [60801015, 60971064]
- Ph.D. Programs Foundation of the Ministry of Education of China [200802131075]
- State Key Laboratory of Millimeter Wave [K201006, K201007]
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A type of electromagnetic concentrator with radial and tangential constitutive parameters as constants is proposed. Only the z component of the constitutive tensor is spatially variant, and all the constitutive parameters are nonsingular and positive, which makes it possible to construct it with two-dimensional (2D) metamaterials. The effects of loss and perturbations of parameters on the performance of the concentrator are also investigated. Finally, a simplified concentrator suitable for the case that is not sensitive to the omnidirectional scattering field is proposed. This study provides a feasible method for the fabrication of a 2D electromagnetic concentrator. (C) 2011 Optical Society of America
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