Abstract: Automatic Switched Optical Network (ASON) represents the development trend of optical networks. Multi-granularity optical switching is the importantly physically supporting techniques for ASON to realize traffic engineering and quality of service(QoS). The type of node structure realizing multi-granularity optical swithing in ASON is put forward and a multi-granularity optical switch using this structure is developed. The software for controlling the node in ASON is compiled. The experimental research is carried out with campus network as signalling network and the data network is of mesh architecture, which is a typical architecture in ASON. The main functions of ASON are verified.

Key words: Automatic Switched Optical Network, multi-granularity optical switch, signalling, routing

摘要： 自动交换光网络是光网络的发展方向，多粒度光交换技术是自动交换光网络实现流量工程和业务质量的重要物理支撑技术。本文提出了一种适用于自动交换光网络的多粒度光交换节点结构，并采用该结构研制出了多粒度光交换机；开发了ASON的节点控制软件；数据网采用ASON的典型结构——格状网，利用校园网作为信令网进行了实验研究，验证了ASON的主要功能。

关键词: 自动交换光网络, 多粒度光交换机, 信令, 路由