Blocking RWA Model Analysis in Irregular OTN Topology

Abstract

Wavelength converters (WC) that configured on the nodes can make the same wavelength optical channel from the continuity constraints, if it is configured suitable, it will effectively reduce the network congestion ratio. In this paper, we investigate the sub graph algorithm with blocking RWA model for the large capacity optical transport. Because the price is more expensive WC, it can not be deployed in all nodes considering the increasing costs and maintenance complexity. We investigated is the WC configuration during network construction, with only part of the network node configuration. The studies show that the rational allocation of part of the WC can get nearly the same performance as the full wavelength conversion network.