期刊
OPTICS EXPRESS
卷 25, 期 12, 页码 13648-13658出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.25.013648
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资金
- National Natural Science Foundation of China [61675074]
Asymmetric optical transmission is fundamental and highly desirable in information processing and full manipulation of lightwave. We here propose an asymmetric optical transmission device consisting of a gradient metasurface and a one-dimensional subwavelength grating. Owing to the unidirectional excitation of surface plasmon polaritons (SPPs) by the gradient metasurface, and SPP-assisted extraordinary optical transmission, forward incident light has much higher transmission than the backward one. We combine temporal coupled mode theory and finite-difference time-domain simulations to verify its operation principle and study the performance. The results indicate that asymmetric transmission With high-contrast and large for transmittance can be obtained around the 1.3 mu m optical communication band. (C) 2017 Optical Society of America
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