论文标题
在基于方格杆的光子晶体微观结构中使用线性缺陷的全光级加法器的新型设计
A novel design of all-optical half adder using a linear defect in a square lattice rod-based photonic crystal microstructure
论文作者
论文摘要
在本文中，我们根据由硅棒组成的光子晶体（PHC）结构中的线性缺陷提出了一个全光速的高速加法器。半加法的正确设计无需增加非线性KERR效应的输入光学信号的强度，这导致将传入的光转向所需的输出。所提出的设备由四个光学波导和方形晶格PHC中的缺陷组成。两种著名的平面波扩展和有限的差异时间域方法用于研究和分析PHC内部的光子带结构和光传播。提出的结构（总和和携带）分别为16dB和14dB。我们的仿真结果表明，提出的一半加法器的最大延迟时间为0.7 PS，总足迹为158 UM2。由于延迟时间非常低，高对比度和较小的足迹，它们在现代光电技术中更为重要，因此该结构可用于下一代全光速高速中央处理单元。
In this paper, we propose an all-optical high-speed half adder based on linear defects in a photonic crystal (PhC) structure composed of silicon rods. The proper design of half adder results in no need to increase the intensity of the input optical signal for the appearance of the nonlinear Kerr effect, which leads to diverting the incoming light toward the desired output. The proposed device consists of four optical waveguides and a defect in a square lattice PhC. Two famous plane wave expansion and finite difference time domain methods are used to study and analyze photonic band structure and light propagation inside the PhC, respectively. The presented structure, the ON-OFF contrast ratios for Sum and Carry, are 16dB and 14dB, respectively. Our simulation results reveal the proposed half adder has a maximum delay time of 0.7 ps with a total footprint of 158 um2. Due to very low delay time, high contrast ratio, and small footprint that they are more crucial in modern optoelectronic technologies, this structure can be used in the next generation of all-optical high-speed central processing units.
