On the other hand , routers are always bottleneck in network transmision before adopting the optical exchange . this limits the bandwidth to a large extend . however , the reqirement of the quality of service of the custmers is improving , so new routers are hoped to sustain qos and to schedule according to the priority of custmers 另一方面，在光交换技术成熟并被采用之前，路由器始终是网络传输中的一个瓶颈，这使网络带宽受到了一定的限制，而客户对网络的服务质量( qos , qualityofservice )要求也越来越高。
For multi - granularity application , both a lambda - group model used in traffic grooming and a new intelligent switching fabric based on the new model were presented . the optical switching fabric presented a distinctive approach of dividing granularities into specific tunnels for effective optical treatment . in addition , two key dynamic algorithm modules of configuration for granularity separation in the control layer were discussed . simulation results show that the method of particular channel partition can greatly improve the average channel quality and the blocking performance along every optical path for dynamic connection requests 针对多粒度应用,开发了一种用于流量疏导的波群模型,并引入一种基于此模型的新型智能交换结构.该光交换结构提供了独特的区分粒度到相应隧道进行有效处理的方法.此外,还讨论了控制层粒度分离时采用的两个关键的动态算法模块.仿真结果显示这种特殊的通道分离方法有效提高了处理动态连接请求时每个光路径的平均信号通道质量和阻塞性能
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 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。
Already the leading telecommunications infrastructure and solutions provider in china , alcatel shanghai bell delivers end - to - end solutions and high quality services , covering fixed and mobile networking , broadband access , intelligent optical networking , network applications , network integration service and multimedia solutions 作为中国领先的全面通信解决方案供应商，公司提供端到端的解决方案和优质服务，业务覆盖固定语音网络、移动通信网络、数据通信网络，智能光交换网络、网络应用、系统集成与服务、多媒体终端等。
Being key components of optical fiber communication , fabry - perot filters and fiber grating filters have been applied in optical sources , wdm multiplexing and de - multiplexing , and add - drop multiplexing , wavelength routers , optical switching of all optical network etc . , which greatly promote the advance of high . speed optical communication technology 而法布里-珀罗滤波器和光纤光栅滤波器是现代光通信系统中的关键器件，它被广泛应用于光纤通信的各个关键环节，从光源、波分复用的分波和合波，到全光网络的上下路、波长路由；光交换等。
