Performance evaluation of the KEOPS wavelength routing optical packet switch

This paper presents results concerning the performance evaluation of the KE OPS wavelength routing optical transparent packet switch. This switch solve s contention using optical delay lines; these delay lines are grouped in se veral sets, in the first stage of the switch. Each input port has access to a few of these delay lines, and each set of delay lines has access to each output port. Non-FIFO output buffers are thus emulated using scheduling on a small number of delay lines with non-consecutive delays. Under simplifyi ng assumptions, analytical models are derived, and checked by simulation. T hese models provide efficient bounds for estimating packet loss probability , under the assumption of regular. balanced input traffic. it is shown that the proposed switch architecture achieves a good performance in terms of p acket loss, with a number of delay lines significantly smaller than the one s currently used in other architectures.