1前言 随着通信容量的增大,光通信已经成为通信行业的重要基础。虽然通信的安全非常重要,但是现在还尚未解决。以前的安全通信方式是用计算机软件编成密码,其保密性取决于计算量的复杂性。但是理论上可以用近年来发展的量子计算机和超高速计算机对其解读。因此开发与以前不同的“理论上安全”的通信方法成为亟待解决的课题,作为其候补之一的利用激光混沌的通信方法现在倍受重视。 美国加利福尼亚州在1998年启动了政府出资的混沌通信大学联合开发项目,参加成员包括加利福尼亚大学圣迭戈分校、洛杉矶分校和斯坦福大学的数学家、物理学家及电路、激光、通信工程技术人 1 Introduction With the increase of communication capacity, optical communication has become an important foundation for the communications industry. Although the security of communications is very important, it is still unresolved. Previous methods of secure communication were computerized cryptography, the confidentiality of which depends on the computational complexity. However, in theory, it can be interpreted by using quantum computers and ultra-high speed computers that have been developed in recent years. Therefore, it is urgent to develop a “theoretically secure” communication method different from before, and a communication method using laser chaos as one of its candidates is now paying more attention. California, USA Launched a government funded Chaos Communications University co-development project in 1998. Participants include mathematicians, physicists and circuit designers at the University of California, San Diego, Los Angeles and Stanford, and laser, communications engineering and technical personnel