一种新型光交叉连接器的设计

The design of a novel OXC

由于光交叉连接器(OXC)在密集波分复用(DW DM)网络中起关键作用,文中提出一种采用双向环行器的新型光交叉连接器设计方案。其基本结构由一个双向环行器与一个光纤布拉格光栅(FBG)组成,构成一个2×2光交叉连接器,再根据这一基本结构设计出可满足实际需要的N×N光交叉连接器。此方法具有结构简单、体积小、价格便宜及所需环行器数量少(比传统的少67%)等优点。最后,把新型光交叉连接器的插入损耗与传统结构连接器的插入损耗进行了比较。仿真结果表明,新结构比传统结构具有更小的插入损耗。

The optical cross connecter （OXC） plays an important role in dense wavelength division multiplexing （DWDM） network. A new OXC structure based on bidirectional optical circulators （OC） is proposed in this paper. Its basic structure, which called as 2 × 2 optical cross connecter, is composed of a fiber Bragg grating （FBG） and a bidirectional OC. Based on the basic structure, the required N×N OXC can be designed. In comparison with traditional schemes, the new scheme has several strong points, e.g. more simple and compact structure, smaller volume, lower cost and fewer number of OCs （67% less than the traditional structures）. The simulation result shows that its insertion loss is much less than that of the conventional structure.