Patent ID: 9699532
Date: 2017-07-04
CPC Classifications: H04J,H04Q

Claim:
1. A system comprising: a first dense wavelength division multiplexing (DWDM) filter configured to receive a first downstream signal from a first line and to filter off the optical signal; an amplifier configured to amplify the first downstream signal; at least one second downstream DWDM filter configured to receive the amplified first downstream signal and separate the amplified first downstream signal into individual downstream wavelengths; a plurality of third wavelength division multiplexing (WDM) filters configured to receive the individual downstream wavelengths separated by the at least one second downstream DWDM filter and to transmit the individual downstream wavelengths to an optical splitter; a plurality of upstream repeaters configured to receive a plurality of upstream signals from the plurality of third WDM filters and transmit the plurality of upstream signals to the first DWDM filter, the first DWDM filter further configured to combine the plurality of upstream signals for upstream transmission on a single fiber; and at least one splitter and management optical network unit configured to receive a signal from the at least one second filter to decode the optical signal, extract time information and transmit synchronization time information to at least one of the plurality of upstream repeaters.