自动交换光网络中的节点技术

The Node Technology in Automatically Switched Optical Network

本文首先通过对几个典型产品的描述,回顾了自动交换光网络节点技术的发展,然后归纳出自动交换光网络节点的功能要求和属性,之后,从不同方面对光节点进行分类整理,并重点论述光交叉连接器的六种基本结构以及一种多颗粒度的通用结构,最后综述了所涉及到的光电子器件,尤其是徽机电系统（MEMS）光开关。

This paper firstly reviewed the development of the node technology in automatically switched optical network by means of the description of several kinds of prototype products developed by some world-known providers in recent two years. Then, the functionality and the characteristics of the nodes are summarized in this paper. Third, a variety of nodes are classified into some categories according to their connection and application. Fourth, we describe some typical architecture of the optical cross-connect and a generalized multigrain optical cross-connect as well. Lastly, optical and electro-optical components used in the nodes are listed and, in particularly, the MEMS optical switch is discussed.