皮秒量级的快速率可重构光混沌逻辑运算  

Reconfigurable Optical Chaotic Logic Operations with Fast Rate of Picoseconds Scale

作　　者：许葛亮 徐健 孔令立 黄其锋 仇显婷 郭洋洋 程峰 XU Geliang;XU Jian;KONG Lingli;HUANG Qifeng;QIU Xianting;GUO Yangyang;CHENG Feng(School of Electronic Engineering,Chaohu University,Hefei 238000,China)

机构地区：[1]巢湖学院电子工程学院,合肥238000

出　　处：《光子学报》2021年第5期174-183,共10页Acta Photonica Sinica

基　　金：Natural Science Foundation of the Higher Education Institutions of Anhui Province(No.KJ2019A0685);the School Level Scientific Research Project of Chaohu University(No.XLY-202001);the National College Students Innovation and Entrepreneurship Training Program of Chaohu University in 2019(No.201910380019);the National College Students Innovation and Entrepreneurship Training Program of Chaohu University in 2020(No.202010380011)。

摘　　要：基于垂直腔表面发射激光器(VCSEL)自身的光反馈以及线性电光调制效应,设计了一种实现动态可重构的光混沌逻辑运算的技术方案。归一化注入电流被调制为逻辑输入,横向电场被调制为控制信号,逻辑输出通过对VCSEL输出的x偏振光光强的均值与阈值做差进行解调。通过转换控制信号与逻辑输入的逻辑运算关系,系统就能在基本的逻辑运算如NOT、AND、NAND、OR、NOR、XOR以及XNOR间自由切换。码元宽度为600 ps且噪声强度高达2.75×10^(9)情况下,逻辑运算的成功概率仍为1,表明系统具有良好的抗噪声性能。并且噪声强度等于2.5×10^(9)时,码元宽度至少达到579 ps,逻辑运算的成功概率才恒为1。本文研究对于研发快速稳定的组合逻辑运算器件等具有参考价值。In order to realize dynamic and reconfigurable optical chaotic logic operations,a specific technical scheme based on Vertical Cavity Surface Emitting Laser(VCSEL)feedback by its own light and linear electro-optic modulation effect has been proposed.The normalized injection current is modulated as logic input,the transverse electric field is modulated as control signal,and the logic output is demodulated by the difference between the average value and the threshold value of the x-polarized light intensity from the output of VCSEL.By transforming the logic operation relationship between control signal and logic input,the system can switch freely among basic logic operations such as NOT,AND,NAND,OR,NOR,XOR and XNOR.When the code width is 600 ps and the noise intensity is as high as 2.75×10^(9),the success probability of the logic operation still equals 1,indicating that the system has good anti-noise performance.And when the noise intensity equals 2.5×10^(9),the success probability always equals 1 if the code width is at least 579 ps.The above results have great reference value for the development of fast and stable combinational logic operation devices.

关 键 词：垂直腔表面发射激光器 可重构 光混沌逻辑运算 皮秒量级 

分 类 号：N93[自然科学总论]