A study on the architecture of very high speed photonic switching networks

21世纪的超高速网络。它肯定会成为社会的基础设施，应该比传统的网络快3位数。为了这样的速度。节点交换网络的规模越来越大、速度越来越快，本文从这一角度出发，对光交换网络进行了研究。在波长和空分混合组网的基础上，对业务处理性能进行了分析。此外，我们还尝试通过在交换矩阵中添加时分交换来扩大容量。结果表明，通过允许较少的阻塞和增加时分交换，从根本上节省了所需的硬件数量。我们进一步研究了利用这些光交换节点的网络的协议。对此类网络的QOS问题也进行了研究。

The very high speed networks in the 21st century. which will be definitely an infrastructure of the society, should be 3 figures faster than the conventional network. For such speed up. the larger and faster switching fabric at nodes are ndatory.From this point of view, this study focus on the photonic switching networks. Based on the mixture of wavelength and space division networked, we analyzed the traffic handling performance. Further, we try to enlarge the capacity by adding the time division switching to the fabric. It was shown that the required amount of hardware is radically saved by allowing little blocking and by adding the time division switching.We went further to study the protocols of the networks in which these photonic switching nodes are utilized. The QOS issues on such networks are studied, too.