Broadcast-wavelength architectures for a WDM passive star-based local area network

The authors study the possibility of employing broadcast-wavelength structures, as the potential virtual topology of choice for multichannel multihop lightwave networks. These structures are based on regular topologies and incorporate the broadcasting capability of the wavelength division multiplexing (WDM) passive star. The structures are based on the two-dimensional torus structure. The system performance is expressed in terms of the maximum throughput, average end-to-end delay, and the average queue length as a function of the offered traffic. The numerical results show that the proposed broadcast-wavelength structures drastically improve the system performance, while preserving the advantages of the original topologies