论文标题
基于石墨烯的多功能三端口远红外组件
Graphene-Based Multifunctional Three-Port Far-Infrared Components
论文作者
论文摘要
提出和分析了两个基于石墨烯的T形多功能组件和远红外区域。第一个组件可以用作分隔线，开关和动态控制的过滤器。该T结出的圆形石墨烯谐振器和三个石墨烯波导，其表面等离子体 - 果龙波正面连接到谐振器。可以调整谐振器以使用偶极子，四极杆或己键模式。石墨烯元素存放在$ sio_ {2} $（二氧化硅）和$ si $（硅）两层基板上。组件的动态控制和切换由定义石墨烯费米能的静电场提供。数值模拟表明，在两个输出端口中的每个输出端口中的每个输出端口中，分区制度中的第一个组成部分（也是ONCIME）在中心频率下具有传输系数-4.3 dB，而FWHM为9.5 $ \％$。在OFF制度中，从输入端口隔离两个输出端口约为-30 dB。第二个组件是无谐振器的T型结构，它在超过八度频率频段中实现了分隔开关的功能。
Two graphene-based T-shaped multifunctional components for THz and Far-Infrared regions are proposed and analyzed. The first component can serve as a divider, a switch and a dynamically controllable filter. This T-junction presents a circular graphene resonator and three graphene waveguides with surface plasmon-polariton waves connected frontally to the resonator. The resonator can be adjusted to work with dipole, quadrupole or hexapole modes. The graphene elements are deposited on a $SiO_{2}$ (silica) and $Si$ (silicon) two-layer substrate. The dynamical control and switching of the component is provided by the electrostatic field which defines the graphene Fermi energy. Numerical simulations show that the first component in the division regime (which is also the regime ON) has the transmission coefficient -4.3 dB at the central frequency for every of the two output ports and the FWHM is 9.5$\%$. In the OFF regime, the isolation of the two output ports from the input one is about -30 dB. The second component is a T-junction without resonator which fulfils the function of the divider-switch in more than octave frequency band.
