期刊
OPTICS LETTERS
卷 37, 期 11, 页码 2094-2096出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.37.002094
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资金
- Turkish Republic Ministry of Development
- European Science Foundation
- European Union
- North Atlantic Treaty Organization
- Scientific and Technological Research Council of Turkey [107A004, 107A012, 109E301]
- Turkish Academy of Sciences
A circular polarizer, which is composed of periodic and two-dimensional dielectric high-contrast gratings, is designed theoretically such that a unity conversion efficiency is achieved at lambda(0) = 1.55 mu m. The operation is obtained by the achievement of the simultaneous unity transmission of transverse magnetic and transverse electric waves with a phase difference of pi/2, meaning that an optimized geometrical anisotropy is accomplished. By the utilization of the rigorous coupled-wave analysis and finite-difference time-domain methods, it is shown that a percent bandwidth of similar to 50% can be achieved when the operation bandwidth is defined as the wavelengths for which the conversion efficiency exceeds 0.9. (c) 2012 Optical Society of America
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