论文标题
用于大规模光学网络的基于WSS的模块化OXC
Modular WSS-based OXCs for Large-Scale Optical Networks
论文作者
论文摘要
宽带应用的爆炸性生长要求大规模的光学交叉连接（OXC）。但是，基于经典的波长选择性开关（WSS）的OXC无法根据所使用的WSS的大小和电缆复杂性而扩展。为了解决这个问题，我们提出了一种三相方法来构建基于WSS的OXC。在阶段1中，我们将传统OXC的输入阶段和输出阶段之间的互连网络分解为一组小型互连网络。在第2阶段，我们将每个WSS分解为小型WSSS的两个阶段级联结构。在第3阶段，我们将小型互连网络与小型WSS结合在一起，形成一组小型OXC模块。最后，我们获得了一个模块化OXC，该模块化是小型OXC的网络。与经典OXC相似，模块化OXC在每个波长处无封锁，并且具有一个自穿刺特性。我们的分析表明，模块化OXC具有较小的布线复杂性和可接受的物理层性能。
The explosive growth of broadband applications calls for large-scale optical cross-connects (OXCs). However, the classical wavelength selective switch (WSS) based OXC is not scalable in terms of the size of employed WSSs and the cabling complexity. To solve this problem, we propose a three-phase approach to construct a modular WSS-based OXC. In phase 1, we factorize the interconnection network between the input stage and the output stage of the traditional OXC into a set of small-size interconnection networks. In phase 2, we decompose each WSS into a two-stage cascaded structure of small-size WSSs. In phase 3, we combine the small-size interconnection networks with the small-size WSSs to form a set of small-size OXC modules. At last, we obtain a modular OXC, which is a network of small-size OXCs. Similar to the classical OXC, the modular OXC is nonblocking at each wavelength and possesses a self-routing property. Our analysis shows that the modular OXC has small cabling complexity and acceptable physical-layer performance.
