A new 2×1 node receiver architecture for packet switched networks

This paper proposes a new 2×1 node receiver architecture for all-optical packet switched networks, whose basic principle can be extended to construct a larger buffer if more 2×2 switches and fiber delay lines (FDLs) are available. The most striking characteristic of the architecture is that the buffer is achieved by a combined use of feed-forward and feedback FDLs. We describe and analyze the concrete two-stage FDL architecture as it has the advantages of being the cheapest and simplest multi-stage solution. As for control strategy, we demonstrate that bottom control strategy (BCS), which use FDL that is arranged in the feed-forward form when both feed-forward and feedback FDLs are available, is a more robust solution against bursty traffic. Simulation results show that the developed architecture (D.K. Hunter, W.D. Cornwell et al., October 1998) performs well in terms of performance metrics such as packet loss probability; (Z. Haas, 1993) has a simpler control requirement and a better packet loss probability than M-quadro [I. Chlamtac et al., December 2000].