Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 30, Issue 15, Pages 2442-2446Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2012.2200095
Keywords
Chiral media; metamaterials; polarization
Funding
- National Natural Science Foundation of China [60706013, 11104093]
- Fundamental Research Funds for the Central Universities (HUST) [2011TS120]
- Opened Fund of the State Key Laboratory on Integrated Optoelectronics
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Recently, circular polarizer with cylindrical double-helical metamaterials has been proposed to broaden the operation band of cylindrical single-helical metamaterials, but its extinction ratio is deteriorated. In this paper, we proposed a circular polarizer with conical double-helical metamaterials, which have a large extinction ratio of 83:1, more than four times higher than that of cylindrical double-helical metamaterials. Furthermore, we gave a qualitative interpretation about this phenomenon through analyzing the interaction between two helical wires in one unit cell of the circular polarizer.
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