激光混沌并联同步及其在全光逻辑门中的应用研究

提出多量子阱激光器混沌“主-从-响应”式结构同步系统，研究其并联同步在光学逻辑门中的应用. 利用一个注入多量子阱激光器混沌系统注入驱动实现了两个响应多量子阱激光系统的混沌并联同步，同时还获得了“主-从”式结构的混沌同步. 基于响应子系统的混沌并联同步思想，提出了全光逻辑门的基本理论模型并定义了计算原则与方法. 利用光的外部调制方法对两个驱动光进行调制与控制，让两个响应子系统实现同步与非同步，使系统获得了并具有全光逻辑门函数功能与特点，并成功地进行了数字逻辑计算. 具体提出了全光XNOR、NOR、NOT等逻辑门及逻辑计算方法，数值模拟结果证明了系统方案的可行性. 关键词： 混沌 同步 逻辑门 多量子激光器

Chaotic laser parallel synchronization and its application in all-optical logic gates

We present a “master-slave-response” synchronization system of chaotic multiple-quantum-well lasers. And we study the applications of chaotic parallel synchronization for optical logic gates. An injection multiple-quantum-well laser drives two responding systems of multiple-quantum-well lasers to obtain chaotic synchronization while the injection multiple-quantum-well laser can synchronize the responding systems. We present theoretically the constructions of the fundamental all-optical gates based on the parallel synchronization of responding systems and define their computational principle. By modulating the driving light into the responding systems, all-optical logic gates characterizing logic function are realized by synchronizing or unsynchronizing appropriately the two chaotic states of responding systems. We present all-optical XNOR, NOR, NOT logic gates and their logic computational methods. Numerical simulation result validates the feasibility of the system.
Keywords： chaos logic gate synchronization semiconductor laser