In this paper, all-optical plasmonic switches are proposed and analyzed. These structures consist of a rectangular resonator filled with a Kerr-type material (AuSiO₂) which is coupled to isolated metal–insulator–metal plasmonic waveguides. The resonators contain periodic arrays of nano-rods with rectangular and triangular patterns. The horizontal and vertical waveguides are used for data and control signals, respectively. Using two separate paths for the data and control signals results in suitable isolation between the signals. The finite difference time domain (FDTD) method is used for numerical investigation of the designed structures. To provide more insight, the FDTD results of the building blocks of the switches are compared with transmission line method results. The most important benefits of the proposed topologies are requiring lower pump intensities, needing smaller footprints and having isolated data and control ports. The proposed switch needs a pump intensity equal to 193.2 mW/μm² and requires a 0.593 μm² footprint area. A 11.3 dB contrast ratio exists between the On and Off states of the switch. Based on the mentioned advantages, these switches have the potential to be used in complex integrated optical circuits.

本文提出并分析了全光等离子体开关。这些结构由填充了Kerr型材料（AuSiO ₂）耦合到隔离的金属-绝缘体-金属等离子体激元波导。谐振器包含具有矩形和三角形图案的纳米棒的周期性阵列。水平和垂直波导分别用于数据和控制信号。对数据和控制信号使用两条分开的路径会导致信号之间的适当隔离。有限差分时域（FDTD）方法用于设计结构的数值研究。为了提供更多的见解，将交换机构建块的FDTD结果与传输线方法结果进行了比较。提议的拓扑的最重要的好处是要求较低的泵浦强度，较小的占用空间以及隔离的数据和控制端口。建议的开关需要的泵浦强度等于193.2 mW /μm²，并且需要0.593  μ米²的占位面积。开关的开和关状态之间存在11.3 dB的对比度。基于上述优点，这些开关具有在复杂的集成光学电路中使用的潜力。