With the increase in demand for bandwidth-thirsty cloud-based services, bandwidth demands for rack-to-rack interconnect in data centers are increasing exponentially. In this paper, an optical interconnect architecture dubbed “POID” is proposed. The novel architecture is proposed using passive optical technology, wavelength division multiplexing, and innovative architectural concepts. The proposed architecture adequately supports the rack-to-rack traffic with latencies as low as few hundred nanoseconds while providing Tera bits per second throughput. The performance of the proposed architecture is evaluated through simulation studies and compared to other recent related data center interconnection networks from recent literature. The proposed POID architecture provides up to 10% improvement in throughput and up to about 82% reduction in latency compared to other comparative designs of data center interconnects using current optical fiber and switching technologies. The proposed PIOD incurs 22% power penalty compared to the existing best performing comparable designs.

随着对带宽渴求的基于云的服务需求的增长，数据中心对机架到机架互连的带宽需求呈指数增长。在本文中，提出了一种被称为“ POID”的光学互连架构。使用无源光学技术，波分复用和创新的架构概念提出了新颖的架构。所提出的体系结构以低至几百纳秒的延迟充分支持了机架到机架的流量，同时提供了每秒Tera比特的吞吐量。拟议架构的性能通过仿真研究进行了评估，并与来自最近文献的其他最近相关的数据中心互连网络进行了比较。与使用现有光纤和交换技术的数据中心互连的其他比较设计相比，拟议的POID体系结构可将吞吐量提高多达10％，将等待时间减少多达约82％。与现有的最佳性能可比设计相比，拟议的PIOD会产生22％的功率损失。