PERFORMANCE STUDIES OF

1. PERFORMANCE STUDIES OF COMMUNICATION SYSTEMS AND NETWORKS INCORPORATING NON-LINEAR APPLICATIONS OF SEMICONDUCTOR OPTICAL AMPLIFIERS Mário M. Freire Assessment of Transmission Performance in WDM Networks with SOA-based Wavelength Converters Performance of Dispersion Supported Transmission (DST) Systems with Chirp Reduction in SOAs • Device modelling under research include: • Wavelength converters based on XGM and • XPM in SOAs (bulk and MQW type); • Several multiplexing/demultiplexing • technologies. • Modelling and simulation methodology: • Semi-analytical method; • Gaussian approximation. Block diagram of the simulated 20 Gbit/s DST system Assessment of Blocking Performance in WDM Networks • The following topologies are considered: • Unidirectional and bi-directional rings; • Chordal ring; • Mesh-torus and hypercube. Blocking gain due to an increase of the node degree from 3 (chordal ring with 100 nodes) to 4 (mesh-torus with 100 nodes). Receiver sensitivity for DST at 20 Gbit/s versus fibre length assuming that an EDFA or a SOA is used as a booster amplifier