Performance Evolution of Optical Code Conversion Architectures in Hybrid WDM/OCDM OBS Network

This paper investigates the performance of optical code conversion architectures in hybrid technology using wavelength and optical code division multiplexing for optical burst switching network. An OCDM-based multigranularity optical cross-connect is used to enable and convert the optical path switching in bandwidth granularity finer than the wavelength-based path. Such an optical path switched by OCDM-based MG-OXC is capable of hybrid optical code/wavelength conversion along the path from a source to destination. Simulation results indicate that increasing the number of optical codes per wavelength and applying optical code conversion considerably decreases the burst blocking probability and latency, and also increases network throughput. In addition, the results show the advantages of are using sparse-partial optical code conversion architecture in WDM/OCDM OBS network.