Journal
OPTICS EXPRESS
Volume 18, Issue 11, Pages 11990-12001Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.18.011990
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Funding
- National Natural Science Foundation of China (NSFC) [10774195, U0834001, 10974263]
- Program for New Century Excellent Talents in University
- Chinese National Key Basic Research Special Fund [2010CB923200]
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This paper proposes a method to design an incident-angle-insensitive polarization-independent polarization rotator. This polarization rotator is composed of layers of impedance-matched anisotropic metamaterial (IMAM) with each layer's optical axes gradually rotating an angle. Numerical simulation based on the generalized 4 x 4 transfer matrix method is applied, and the results reveal that the IMAM rotator is not only polarization-independent but also insensitive to the angle of incidence. A 90 polarization rotation with tiny ellipticity variation is still available at a wide range of incident angles from 0 to 40 degrees, which is further confirmed with a microwave bi-split-ring resonator (bi-SRR) rotator. This may be valuable for the design of optoelectronic and microwave devices. (C) 2010 Optical Society of America
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