啁啾光纤光栅波长路由光网络的组播功能实现  

The implementation of multicast in wavelength routing optical network based on chiped fiber gratings

作　　者：陈明[1] 张峰[1] 秦曦[1] 陈勇[1] 曹继红[1] 吕博[1] 卢丹[1] 简水生[1] 

机构地区：[1]全光网络与现代通信网教育部重点实验室,北京交通大学光波技术研究所,北京100044

出　　处：《光电子．激光》2008年第3期331-334,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60337010)

摘　　要：在基于光路交换的4节点16×10 Gbps双纤单向新型分布式全光自愈环网上,利用啁啾光纤光栅(CFBG)和环行器等无源器件实现了光层组播,避免了光/电/光转换。CFBG在网络中用于实现色散补偿、上下话路和波长路由。通过调节光栅的中心波长,分别完成对控制信息、组播业务信息的分别读取。整个网络不存在关键性节点,每个节点都可以作为组播业务的发起端和接收端。根据控制信息配置传输信道,提高了组播数据流的传输效率。研究结果表明,这种组播方式具有物理实现简单、安全性高、对组播数据速率和格式透明以及数据传输无阻塞等特点。The optical layer multicast are carried out in this paper,which avoids the O/E/O conversion, by using chirped fiber gratings and optical circulators, in a novel distributed all optical self-healing ring network with 4 nodes, single-direction double-fibers and 16×10 Gbps optical transmission. Chirped fiber Bragg gratings （CFBG） used in this network utilize these functions： routing,dropping signal and dispersion compensation. The control and multicast information can be dropped respectively by adjusting the fiber Bragg wavelength. The transfer efficiency of multicast data stream is highly improved,owing to deploy the transmission channel according to the the control information. Each node of this network is equal,which can be the source or destination of multicast. The multicast is implemented effidently, safely, block-free, and with transparency to data rate and format.

关 键 词：光纤通信技术 光层组播 碉啾光纤光栅(CFBG) 

分 类 号：TN929.11[电子电信—通信与信息系统]