Flow-Controlled and Clock-Distributed Optical Switch and Control System

Switching the traffic in optical domain has been considerably investigated as a future-proof solution to overcome intrinsic bandwidth bottleneck of electrical switches data center networks (DCNs). However, due lack fast and scalable switch control mechanism, buffers for contention resolution, complicated implementation clock recovery (CDR), practical deployment centers (DCs) remains big challenge. In this work, we develop experimentally demonstrate first time flow-controlled clock-distributed system, implementing 43.4 ns configuration time, less than 3.0E-10 packet loss rate resulting from contention, 3.1 CDR time. Experimental results confirm that zero buffer overflow caused lower $3~ \boldsymbol {\mu }\text{s}$ server-to-server latency are achieved network deploying smaller 8192 bytes at load 0.5. Real servers running Transmission Control Protocol (TCP) generating monitoring tools exploited system well, validating its capability DCNs services applications with full TCP bandwidth.