With the growth of technology and the need to integrate optical devices, photonic crystals (PhCs) will have great potential in designing and fabricating programmable photonic integrated circuits (PICs). This paper proposes two all-optical majority gates using the fluid infiltration approach in a PhC slab, which aims to design logic functions. Numerical results using the well-known plane wave expansion method show that the proposed fundamental PhC slab has three photonic band gaps (PBGs) in TE mode. The most important is in the wavelength range of 1.516 μm ≤ λ ≤ 1.743 μm, located in the attractive telecom C-band range. The results of light propagation inside the proposed gates using the finite-difference time-domain (FDTD) method reveal that both gates have a standard threshold of less than 0.28 for the logic zero and more than 0.35 for the logic one. The first and second proposed majority gates also have delays of 680 fs and 610 fs, respectively. One of the advantages of using the fluid infiltration approach is that there is no need to change the geometric dimensions of the structure for the desired application. That goal can be achieved only by replacing the fluid with another one. The proposed designs can be used as basic logic gates in the design of PICs.

随着技术的发展和集成光学器件的需要，光子晶体（PhCs）在设计和制造可编程光子集成电路（PICs）方面将具有巨大的潜力。本文提出了两种在 PhC 板中使用流体渗透方法的全光多数门，旨在设计逻辑功能。使用众所周知的平面波展开方法的数值结果表明，所提出的基本光子晶体板在 TE 模式下具有三个光子带隙 (PBG)。最重要的是在 1.516 μm ≤ λ ≤ 1.743 μm 的波长范围内，位于极具吸引力的电信 C 波段范围内。使用时域有限差分 (FDTD) 方法在所提出的门内传播光的结果表明，两个门的标准阈值均小于 0.28，逻辑 0 大于 0。35 为逻辑一。第一个和第二个提议的多数门也分别有 680 fs 和 610 fs 的延迟。使用流体渗透方法的优点之一是无需为所需应用更改结构的几何尺寸。只有用另一种流体替换流体才能实现该目标。所提出的设计可用作 PIC 设计中的基本逻辑门。