Computer Clock Synchronization Allows Optical Switching in Data Centers

A University College London (UCL) and Microsoft-led research team has introduced a new technique for simultaneously synchronizing the clocks of thousands of computers, in less than one nanosecond. The technique, which the team is calling “clock phase caching,” paves the way for the use of all-optical networks by enabling optical switching to take place in data centers. A heavy and increasing volume of server-to-server traffic currently places high demand on data centers, the extensive networks of connected servers that empower users to perform a wide range of functions online. All-optical networks, using light to transmit and route data to increase data center efficiency, are alternatives to existing technologies that...