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This paper proposes a new switching architecture to be used in all optical packet switching networks. The proposed switch is derived from an original 2 Ã 2 two-stage multi-buffer switched delay line based on optical switching node, known as an M-Quadro node. By incorporating bypass lines into the M-Quadro architecture and employing a novel switch control strategy, the optical packet switching node can effectively resolve packet contentions, thus reducing the packet deflection probability substantially. Furthermore, we develop an analytical model to evaluate the system performance under bursty traffic conditions. The numerical results reveal the queueing analysis can evaluate the system performance such as deflection probability and mean delay precisely.