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US 7,627,246 B2Granted
Wavelength division multiplexing passive optical networks to transport access platforms
AssigneeNovera Optics, Inc.
InventorsWayne V. Sorin, Bernd Hesse
Life of this patent
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Abstract
Wavelength division multiplexing (“WDM”) passive optical networks (“PON”) to transport signals having various access platforms are described. For one embodiment, a WDM PON performs bi-directional communications, and includes an interface. The interface transfers one or more signals having a first platform to a WDM-PON data transmission platform at an access point of a network to propagate through a single transmission medium, to one or more remote distribution nodes in between a Central Office and an optical network unit. The single transmission medium carries three or more optical channels traveling in both directions.
Claims26
A wavelength division multiplexing passive optical network (WDM-PON) for performing bi-directional communication, the WDM-PON comprising:
- a first interface at an access point to input a first set of signals configured to comply with a first transmission platform and output a second set of signals based on the first set of signals, wherein each of the second set of signals has a different wavelength, which is mapped to a corresponding one of the first set of signals, wherein the second set of signals are configured to comply with a WDM-PON data transmission platform while having a data transmission sequence in compliance with the first transmission platform and to propagate according to the WDM-PON transmission platform through a transmission medium;
- and
- one or more first remote distribution nodes coupled to the access point, wherein the transmission medium carries the second set of signals traveling along optical channels in a first direction.
A WDM PON system, comprising:
- a Central Office and a remote node;
- a first interface coupled to the Central Office to input a first signals configured to comply with a first transmission platform, to convert the first signals into a second signals, wherein each of the second set of signals has a different wavelength, which is mapped to a corresponding one of the first set of signals, wherein the second set of signals is configured to comply with a WDM transmission platform while having a data transmission sequence in compliance with the first transmission platform, and to output the second set of signals to propagate through an optical transmission medium complying with the WDM transmission platform, wherein the first interface includes a plurality of wavelength locked transmitters;
- and
- a second interface coupled to the remote node, the second interface to input the second set of signals from the optical transmission medium and to output a third set of signals, wherein the third set of signals is configured to comply with the first transmission platform.
1 more element
An apparatus, comprising:
- a line terminal having an input to receive a first set of signals configured to comply with an access transmission platform, and
- a converter to convert the first set of signals to a second set of signals, wherein each of the second set of signals has a different wavelength mapped to a corresponding one of the first set of signals, the second set of signals configured to comply with a WDM transmission platform while having a data transmission sequence in compliance with the first transmission platform, and to output the second set of signals to propagate through an optical transmission medium to a remote node, wherein the line terminal contains one or more wavelength locked optical transmitters.
A WDM PON fiber plant, comprising:
- one or more converters having an input to receive a first set of signals having an access platform and an output to output a second set of signals, wherein each of the second set of signals has a different wavelength, which is mapped to a corresponding one of the first set of signals, wherein the second set of signals is configured to propagate through an optical transmission medium in compliance with a WDM platform while having a data transmission sequence in compliance with the first transmission platform;
- and
- an arrayed waveguide multiplexer/demultiplexer coupled to the one or more converters.
A method, comprising:
- inputting a first set of signals configured to comply with a first transmission platform;
- converting the first set of signals into a second set of signals, wherein each of the second set of signals has a different wavelength, which is mapped to a corresponding one of the first set of signals, wherein the second set of signals are configured to comply with a WDM transmission platform while having a data transmission sequence in compliance with the first transmission platform;
- outputting the second set of signals to propagate through a single optical transmission medium according to the WDM transmission platform;
- inputting the second set of signals from the single optical transmission medium;
- and outputting a third set of signals, wherein the third set of signals is configured to comply with the first transmission platform of the first set of signals.
2 more elements
Dependencies are inferred from the claim text.