Systems and Methods of Hybrid DWDM Aggregation and Extension for Time Division Multiplexing Passive Optical Networks
AssigneeCox Communications, Inc.
InventorYuxin Dai
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Abstract
Example embodiments of the systems and methods of hybrid DWDM aggregation and extension for time division multiplexing passive optical networks as disclosed herein solves problems facing cable operators and telecommunications operators by using WDM and DWDM technologies for time division multiplexing passive optical network aggregation and by extending the reach of the TDM PON beyond standard reach limits. An example system uses a downstream optical amplifier and an upstream repeater to extend the reach and for DWDM aggregation of the time division passive optical network.
Claims27
A system comprising:
- a first filter configured to receive a first signal from a first line and to filter off the optical signal;
- an amplifier configured to amplify the first signal;
- at least one second filter configured to receive the amplified first signal and separate the amplified first signal into individual wavelengths;
- at least one third filter configured to receive the individual wavelengths and to transmit the individual wavelengths to an optical splitter;
- and
- at least one upstream repeater configured to receive an upstream signal from the at least one third filter and transmit the upstream signal to the first filter.
A method comprising
- receiving a signal from an optical line terminal with a first filter;
- amplifying the received signal;
- transmitting the amplified signal to at least one second filter;
- transmitting the second filter signal to at least one third filter;
- transmitting the signal from the third filter to a splitter;
- transmitting a plurality of signals from the splitter to a plurality of optical network terminals;
- repeating an output of the at least one third filter;
- converting the optical signal from the at least one third filter into an electrical signal;
- processing the electrical signal according to protocols of the electrical signal;
- converting the electrical signal into an optical signal in an ITU C band wavelength;
- and
- transmitting the optical signal to the first filter.
A system for extending the reach of and aggregating a TDM PON comprising:
- an optical amplifier for amplifying downstream signals;
- and
- at least one upstream repeater comprising an optical-electrical-optical repeater and wavelength converter.
Dependencies are inferred from the claim text.