| 摘要 |
An optical switch comprises a hub and a plurality of nodes with the hub bein g connected to each node by an optical communication link dedicated for clock signals and by an optical communication link dedicated for data signals. In use the hub transmits a clock signal to all of the nodes; each node re-transmits a copy of the clock signal to the hub and transmits a data signal to the hub. The hub returns each re-transmitted clock signal to its respective node and forwards a copy of each data signal to all of the nodes so that each node can receive a selected data signal by processing the re-transmitted clo ck signal.
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