An all-optical half subtractor using photonic crystal based nonlinear ring resonators

被引：0
作者：
Askarian A. [1 ]
Akbarizadeh G. [2 ]
Fartash M. [3 ]
机构：
[1] Department of Electrical Engineering, Arak Branch, Islamic Azad University, Arak
[2] Department of Electrical Engineering, Shahid Chamran University of Ahvaz, Ahvaz
[3] Department of Computer Engineering, Arak Branch, Islamic Azad University, Arak
来源：
Optik | 2020年 / 207卷
关键词：
Half subtractor; Kerr effect; Photonic crystal; Ring resonator;
D O I：
10.1016/j.ijleo.2020.164424
中图分类号：
学科分类号：
摘要：
Optical half subtractor is one of the optical logic gates, which is very important for realizing all optical computing systems. The aim of this paper is to design a new structure for realizing an all-optical half subtractor based on photonic crystal nonlinear ring resonators. For this purpose, three nonlinear ring resonators are combined with the some optical waveguides to create the desired structure. A finite difference time domain method will be utilized to analyze and simulate the proposed structure. The simulation results show that the contrast ratio for D and B ports are 6.81 dB and 7.78 dB respectively. Moreover, the maximum rise and fall times for the proposed structure are 1.5 ps and 1 ps respectively. © 2020 Elsevier GmbH
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