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Asymmetric transmission or optical-diode behavior have very important applications in information technology, such as directionally-sensitive beam splitting, multiplexing, and optical interconnection. Here, we propose an all-dielectric chiral metamaterial to realize asymmetric wave transmission in far-infrared band. Made of Si-based double L-shaped resonators on both sides of SiO2 substrate, the three-layered...
Nonreciprocal optical effects have become a popular topic of research because of their wide range of applications, such as optical isolators and optical diodes for on-chip applications. With the rapid advances of meta-materials and photonic crystals, many new nonreciprocal phenomena were found and associated mechanisms were proposed over the past years. For example, one-way electromagnetic space wave...
One-way light has attracted much attention recently. They have wide range of applications, such as optical isolators and optical diodes. At present, two approaches can be used to realize the one-way light. One is one-way surface waves, which come from chiral edge states of photonic crystals [1, 2]. The other is one-way body waves, which may originate from the parity-time symmetry of a system [3, 4]...
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