Bi Ke, Liu Wenjun, Guo Yunsheng, Dong Guoyan, Lei Ming
State Key Laboratory of Information Photonics and Optical Communications &School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China.
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
Sci Rep. 2015 Jul 22;5:12489. doi: 10.1038/srep12489.
Extraordinary transmission through a small aperture is of great interest. However, it faces a limitation that most of approaches can not realize the tunable transmission property, which is not benefit for the miniaturization of the microwave system. Here, we demonstrate a magnetically tunable broadband transmission through a small aperture. By placing two ferrite rods symmetrically on both sides of a single small aperture, the strongly localized electromagnetic fields are effectively coupled to the two ferrite rods. Both the simulated and experimental results indicate that such structure not only realizes a nearly total transmission through a small aperture, but also obtains a magnetically tunable property. This work offers new opportunities for the miniaturization of the microwave system.
通过小孔径实现的超常传输备受关注。然而，它面临一个限制，即大多数方法无法实现可调谐传输特性，这不利于微波系统的小型化。在此，我们展示了一种通过小孔径实现的磁可调宽带传输。通过在单个小孔径的两侧对称放置两根铁氧体棒，强局域化的电磁场有效地耦合到了这两根铁氧体棒上。模拟和实验结果均表明，这种结构不仅实现了通过小孔径的近乎完全传输，还获得了磁可调特性。这项工作为微波系统的小型化提供了新的机遇。
