Analysis of Feedback and Re-Circulating Buffer Based Optical Packet Switch

In optical packet switching (OPS), contention is major phenomenon where more than one packet tries to occupy the same output port. This paper introduces a new design for an optical packet switch based on hybrid buffering strategy. In this hybrid scheme both Feedback and Re-Circulating buffers are used to hold the contending packets. OPS is a latest transmission technology which is based on the optics and provide high bandwidth and very low latency. However, as the traffic conditions varies continuously, therefore a key challenge is to design buffering strategy. In this study, we explore how combining the benefits of both Feedback and Re-Circulating buffers can improve the overall performance of OPS. The performance of the switch is measured in terms of packet loss probability. By looking at packet loss and buffer usage under different traffic conditions, main aim to understand the impact of this hybrid approach. Our results show that using both types of buffers in the same switch leads to a lower chance of packet loss, improving the overall network performance. We found that the proposed design performs better in terms of packet loss probability compared to other approaches.