摘要
理论上利用两个混沌半导体激光器的耦合反馈,构建了两种基本的光电及全光门.基本方法是,让外部光注入到两个激光器中而导致激光混沌,通过两激光器激光的相互耦合及反馈实现同步;在这基础上,一是让两激光器分别在电流调制下,控制混沌同步或者非同步,实现光电逻辑门的功能与计算;二是利用光的外部调制方法让两相互耦合激光分别在相位调制下,控制混沌同步或者非同步,并最终实现全光逻辑门的功能与计算.数值结果证明了两方法的可行性.
We present theoretically the construction of the fundamental gates using two injection semiconductor laser diodes by muans of mutual coupling-feedback.Two laser diodes driven by a common monochromatic light beam run chaos while chaotic synchronization between the two lasers is achieved by coupling-feedback.The optoelectronic logic gate is implemented by appropriately synchronizing or de-synchronizing the two chaotic states by modulating the currents.The alloptical logic gate is finally implemented by appropriately synchronizing or de-synchronizing the two chaotic states via the modulators modulating the coupling lights,which is an external optical modulation method.Numerical results validated the feasibility of the method.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第5期115-120,共6页
Acta Physica Sinica
关键词
混沌
逻辑门
激光器
同步
chaos
logic gate
laser
synchronization
