文档介绍：基于MEMS的OXC结构设计及其应用研究
摘要
随着通信需求的快速增长,密集波分复用(DWDM)网络获得了极大的发展,虽然主干道的传输速率已经很高,但是节点中的交换目前仍然是电的交换,由于传统网络在光层缺乏可操作性,人们又急需实现光域的优化、路由、保护、恢复功能,所以人们就提出了光交叉连接(OXC)这个概念。
全光交换是光纤通信网的发展方向, OXC是全光交换的核心,光开关作为OXC的关键器件,是当前光通信领域的研究热点,同时MEMS光开关由于其众多优点也已成为微机电系统的一个重要研究方向。
本文首先分析了OXC的基本原理和结构,表明OXC在设计中的重要性,然后比较几种不同的光开关的优缺点,最终选择了优点比较多的MEMS机械性光开关作为本设计的主要部件,把MEMS应用到OXC中,设计出了一种新型的光开关结构。
关键词:光通信,MEMS, OXC
The Design of OXC Construction Based on MEMS and Its Application Research
Author:Yang ruihua
Tutor:Li Liping
Abstract
With the rapid growth munication needs, Dense Wavelength Division Multiplexing(DWDM) gains great development. Because work lacks operability in light layer and people are in dire need of realizing the optimize, route, protection and restoration function, people raise the concept of Optical Cross Connection(OXC).
All optical switching is the development direction of optical work, and OXC is the core of all optical switching. Photo-switch, as the key device of OXC, is the research focus of the munication field, meanwhile MEMS optical switching has an important research direction in MEMS because of its various advantages.
This thesis firstly analyses fundamental principles and construction of OXC and manifest the importance of OXC in this design, pare the relative merits of several different kinds of optical switching, finally chooses MEMS optical switching which with more advantages as ponent of this design by applying MEMS into OXC, work out a new type of optical switch structure.
Key words: munication,Micro-Electro-Mechanical Systems, Optical Cross connector
1绪论
21世纪,随着社会信息化的普遍提高,通信容量和光纤速度也在相应的提高,目前通信网的主要组成部分是传输和交换,二者在日常应用中也在不断的发展和革新。通信网中交换系统的规模越来越大,传输交换速率也越来越高,由于交换节点受“电子瓶颈”的束缚所以当今电子交换和信息处理网络的发展已经接近极限,而OXC的出现可以缓解这一“电子瓶颈”的束缚,它可有效解决节点交换速度滞后于传输线路的现状,在光域中把输入端的任一信号可控地连接到输出端的任一光纤中[1]。OXC是光传送网和自动交换光网络的核心设备,兼有复用、交叉连接、保护/恢复、监控和网管等多功能,OXC具有诸多优点,它有多个标准的光纤接口,对于提高节点交换速度以及网络扩容有非常重要的作用,同时具有传输容量大、组网灵活、网络具有可扩展性和可重构性、易于升级、可透明传输各种格式的不同速率等级的信号,能够同时适应用户信号种类和服务种类不断增长的需求等。
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