A novel flexible grid/semi-flexible grid optical path network design algorithm that reserves exclusive frequency slots for high bitrate signals

We propose a novel routing and spectrum assignment algorithm that reserves exclusive spectrum area for high bitrate signals. The aim of this study is to reduce the inherent blocking ratio inequality caused by the non-uniform bandwidth allocation in flexible grid/semi-flexible grid optical path networks. Numerical experiments demonstrate that our proposed assignment strategy can reduce the path setup blocking ratio for both flexible grid and semi-flexible grid networks. The traffic volume accommodated by the network can be improved by 10%. The effectiveness of our proposal is verified for various bitrate signal patterns and network topologies.