Actively tunable THz filter based on an electromagnetically induced transparency analog hybridized with a MEMS metamaterial.
Actively tunable THz filter based on an electromagnetically induced transparency analog hybridized with a MEMS metamaterial.
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DOI：
10.1038/s41598-020-77922-1
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发表时间：
2020-11-30
影响因子：
4.6
通讯作者：
Kanamori Y
中科院分区：
文献类型：
--
作者：
Huang Y;Nakamura K;Takida Y;Minamide H;Hane K;Kanamori Y
经典振子系统中的电磁感应透明(EIT)类似物因其在非线性器件和慢光场等光学领域中的潜在应用而被研究。超材料是利用类EIT效应来调节光的很好的候选材料。本文从数值和实验两方面提出了一种用于控制THz波的主动可重构EIT超材料，它由一个可移动的杆和一个固定的线对组成。通过微电子机械系统技术改变棒与线之间的距离，这种超材料可以可控地调节EIT行为，操纵1.832太赫兹附近的波，作为动态过滤器。通过对MEMS驱动器施加驱动电压，获得了38.8%的高透过率调制率。研究了超材料的色散特性和偏振特性。由于利用MEMS的优势，该滤波器易于小型化和集成化，有望极大地促进与THz相关的实际应用的发展，如THz生物检测和THz通信。
Electromagnetically induced transparency (EIT) analogs in classical oscillator systems have been investigated due to their potential in optical applications such as nonlinear devices and the slow-light field. Metamaterials are good candidates that utilize EIT-like effects to regulate optical light. Here, an actively reconfigurable EIT metamaterial for controlling THz waves, which consists of a movable bar and a fixed wire pair, is numerically and experimentally proposed. By changing the distance between the bar and wire pair through microelectromechanical system (MEMS) technology, the metamaterial can controllably regulate the EIT behavior to manipulate the waves around 1.832 THz, serving as a dynamic filter. A high transmittance modulation rate of 38.8% is obtained by applying a drive voltage to the MEMS actuator. The dispersion properties and polarization of the metamaterial are also investigated. Since this filter is readily miniaturized and integrated by taking advantage of MEMS, it is expected to significantly promote the development of THz-related practical applications such as THz biological detection and THz communications.
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影响因子：
1.9
作者：
Rakic, AD;Djurisic, AB;Majewski, ML
通讯作者：
Majewski, ML
DOI：
10.1109/jstqe.2014.2385957
发表时间：
2015-07-01
影响因子：
4.9
作者：
Kanamori, Yoshiaki;Hokari, Ryohei;Hane, Kazuhiro
通讯作者：
Hane, Kazuhiro
影响因子：
0.9
作者：
Alzar, CLG;Martinez, MAG;Nussenzveig, P
通讯作者：
Nussenzveig, P
影响因子：
8.6
作者：
Harris, SE;Hau, LV
通讯作者：
Hau, LV
影响因子：
29.4
作者：
Liu, Xinyu;Padilla, Willie J.
通讯作者：
Padilla, Willie J.