On optimization of optical packet switches with reconfiguration overhead

Optical packet switching is one of the most promising technologies for carrying IP traffic over WDM optical networks. For optical packet switch (OPS) design, due to the reconfiguration overhead in the switch fabric, packet delay and speedup are two key factors to be considered. Existing scheduling algorithms, DOUBLE [4] and ADAPTIVE [5], make effective tradeoff between these two factors. In this paper, we show that the performance of both DOUBLE and ADAPTIVE, as well as their underlying OPS switch architecture, can be further optimized. Our proposed solutions are shown to effectively reduce both speedup and packet delay at the same time without incurring any extra cost. © 2005 IEEE.published_or_final_versio