Optical logic devices are indispensable for optical computing and data processing. In order to acquire high performance optical logic device, a novel plasmonic structure based on plasmon-induced transparency (PIT) effect is proposed. It can implement multiple logic functions simultaneously with high output contrast ratios between “0” and “1” states through a new manipulation method of angle rotation. The optical logic device consists of dual identical hexagonal resonators with rotatable ellipses embedded in resonators and two parallel metal-insulator-metal (MIM) waveguides. The specific rotation angles of ellipses are defined as the input logic states. In addition, according to the transmissions at output ports, the thresholds are set to distinguish the output logic states. Ultimately, four kinds of logic functions: AND, NAND, NOR and NOT can be implemented with fairly high output contrast ratios in this compact device. Most importantly, among these logic functions, AND, NAND, and NOR can be operated simultaneously with wavelength division multiplexing (WDM) technique. Therefore, this work supplies a potential application for optical logic integrated circuits.

中文翻译：

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一种新型的角度操纵多功能等离子逻辑器件

光逻辑器件对于光计算和数据处理是必不可少的。为了获得高性能的光学逻辑器件，提出了一种基于等离子体诱导透明（PIT）效应的新型等离子体结构。通过全新的角度旋转操控方式，可以同时实现多种逻辑功能，在“0”和“1”状态之间具有高输出对比度。光学逻辑器件由两个相同的六边形谐振器和两个平行的金属-绝缘体-金属 (MIM) 波导和嵌入谐振器的可旋转椭圆组成。椭圆的特定旋转角度定义为输入逻辑状态。此外，根据输出端口的传输情况，设置阈值以区分输出逻辑状态。最终实现四种逻辑功能：AND、NAND、NOR 和 NOT 可以在这种紧凑型设备中以相当高的输出对比度实现。最重要的是，在这些逻辑功能中，AND、NAND 和 NOR 可以通过波分复用 (WDM) 技术同时操作。因此，这项工作为光逻辑集成电路提供了潜在的应用。