Clock distribution arrangement for time-multiplexed switched...

Details Clock distribution arrangement for time-multiplexed switched... Clock distribution arrangement for time-multiplexed switched...

H - Electricity

04

Q

325/1, 344/25

H04Q 11/04 (2006.01) H04B 10/207 (2006.01) H04L 7/00 (2006.01) H04Q 11/00 (2006.01)

Patent

CA 2007828

- 11 - CLOCK DISTRIBUTION ARRANGEMENT FOR TIME-MULTIPLEXED SWITCHED OPTICAL NETWORK Abstract In an optical time-multiplexed switched communication system, a master clock signal is distributed optically to subscribers via a central switch. The switch modulates a portion of an optical data signal with a representation of the master clock signal prior to its broadcast to a selected subscriber. Several different embodiments of the switch are described for modulating contiguous bit positions reserved within the optical data signal. One embodiment is described for continuously modulating the envelope of the optical data signal with a low amplitude representation of the master clock signal. All embodiments of the switch eliminate both the need for a separate network for broadcasting the master clock signal tosubscribers and the need for allocating a specific wavelength to broadcast the master clock signal.

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