Lu Minran, Xiao Lihua, Xiao Binggang, Yu Jiabin
Appl Opt. 2022 Jun 10;61(17):5251-5259. doi: 10.1364/AO.462099.
Spoof surface plasmon polaritons (SSPPs) have been developed rapidly because of the advantages of strong field constraints, low inter-channel cross talk, and low loss. However, the functions of plasmonic devices made of traditional passive SSPPs are completely fixed and cannot reach reconfigurable capability once the devices are fabricated. For the current development status, it is an urgent issue to design a reconfigurable device to control SPP waves dynamically in real time. This paper proposes a dynamic reconfigurable bandstop filter by using the concept of programmable SSPPs. The filter has a significant regulation function in the wideband range from 4 GHz to 22 GHz. The center frequency, number, and bandwidth of the stop band can be reconstructed in real time by programming the bias voltage, and the transmission coefficient () has good transmission performance of more than -3. The results show that the experimental processing test is close to the theoretical simulation results, which proves the feasibility of the designed device. The study extends the functional principles of information science and digital logic to the application of physical devices.
由于具有强场约束、低通道间串扰和低损耗等优点，仿表面等离激元极化激元（SSPPs）得到了迅速发展。然而，由传统无源SSPPs制成的等离激元器件的功能是完全固定的，一旦器件制造完成，就无法实现可重构能力。针对当前的发展现状，设计一种可实时动态控制表面等离激元极化激元（SPP）波的可重构器件是一个紧迫的问题。本文利用可编程SSPPs概念提出了一种动态可重构带阻滤波器。该滤波器在4GHz至22GHz的宽带范围内具有显著的调节功能。通过对偏置电压进行编程，可以实时重构阻带的中心频率、数量和带宽，传输系数（）具有大于-3的良好传输性能。结果表明，实验处理测试结果与理论模拟结果相近，证明了所设计器件的可行性。该研究将信息科学和数字逻辑的功能原理扩展到了物理器件的应用中。
