Study on Wavelength-Convertible Optical Network
Dense WDM technologies make effective use of the vast fiber bandwidth and offer an added dimension to all-optical networks. In this paper we describe and analyze the switching architecture of the node. Wavelength conversion in key network nodes is emerging as a fundamental functionality that can allow transparent interoperability, contention resolution, wavelength routing, and, in general, better utilization of the network resources under dynamic traffic patterns. To implement wavelength converters in the optical cross-connect (OXC) is a key step towards the all-optical networks. Then two types of networks, with and without wavelength conversion, and two types of wavelength assignment methods are used to calculate the blocking probability in mesh topology. A non-Poisson distribution is also discussed. Wavelength converters are used to effectively alleviate the blocking probability and help to resolve contention at the output port of switches by shifting one incoming wavelength to another outgoing wavelength at an OXC node. The deployment of wavelength converters within optical switches offers robust routing, switching functions and network management in the optical layer. This is critical to the emerging all-optical Internet.
optical network wavelength routing wavelength conversion, blocking probability
ZHANG Ning BAO Hong JI Yuefeng
Institute of Information Technology Beijing Union Beijing 100101, China School of Telecommunication Engineering University Beijing University of Posts and Telecommunication
国际会议
武汉
英文
816-819
2007-07-25（万方平台首次上网日期，不代表论文的发表时间）