Modern data-driven applications pose stringent requirements of high bandwidth, ultra-low-latency, low-powered, and scalable interconnections among switches and routers in data-centers. To address these demands, electronic switching is not a viable choice due to bandwidth and computing bottlenecks. Thus, researchers explored effective optical switch design principles for next-generation data-centers. In optical switches, data aggregates in the form of optical bursts (OB) at ultra-high speeds. In the case of OB contention, solutions are proposed by researchers to store OB as recirculating patterns in fiber delay lines (FDL) with induced optical delay. However, due to variable burst length, it is not possible to measure slot delay length, thus storage of contending bursts is not possible at intermediate core switches. Motivated from the aforementioned discussions, in this paper, we propose a switch design DbOBS, that is capable to store variable OB during contention slots. DbOBS estimates mean burst length, and possible deviation from mean length to minimize burst loss. The considered switch design is validated through parameters like-burst length estimation, over-reservation, and waiting time. For network-layer simulations, poison arrivals of data bursts are considered as packetized units. The packets are sent through Monte-Carlo arrivals and burst loss probability (BLP) is estimated at various input load conditions and buffer sizes. DbOBS achieves a BLP in order of \(10^{-4}\) at load \(\approx\) 0.8, and buffer-size of 50, and burst length of \(L=5\), that outperforms the traditional switch designs.

现代数据驱动的应用对数据中心的交换机和路由器之间的高带宽，超低延迟，低功耗和可伸缩互连提出了严格的要求。为了满足这些需求，由于带宽和计算瓶颈，电子开关不是一个可行的选择。因此，研究人员探索了用于下一代数据中心的有效光开关设计原理。在光开关中，数据以光突发（OB）的形式以超高速聚合。对于OB争用的情况，研究人员提出了解决方案，以将OB作为循环模式存储在光纤延迟线（FDL）中，并具有诱导的光学延迟。但是，由于突发长度可变，因此无法测量时隙延迟长度，因此在中间核心交换机处无法存储竞争性突发。DbOBS，能够在争用时隙期间存储变量OB。DbOBS估计平均突发长度，以及可能与平均长度的偏差，以使突发损失最小化。可以通过诸如突发长度估计，过度保留和等待时间之类的参数来验证所考虑的交换机设计。对于网络层模拟，数据突发的有毒物质到达被视为打包单位。数据包通过蒙特卡洛到达发送，并且在各种输入负载条件和缓冲区大小下估计突发丢失概率（BLP）。DbOBS在负载\（\ approx \）为0.8，缓冲区大小为50，突发长度为\（L = 5 \）的情况下按\（10 ^ {-4} \）的顺序实现了BLP。，其性能优于传统的开关设计。