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US 10,374,715 B2Granted
Optical distribution network protection
AssigneeAlcatel Lucent
InventorsKarsten Oberle, Bartlomiej Kozicki, Thomas Pfeiffer
Life of this patent
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AssigneeAlcatel Lucent
InventorsKarsten Oberle, Bartlomiej Kozicki, Thomas Pfeiffer
Estimating the term…
The network comprises a plurality of optical line terminals which communicate with a plurality of optical network units over an optical distribution network. The optical distribution network includes a plurality of optical filters controlled by a network controller. A first optical line terminal sends a request for optical communication with at least one optical network unit to the network controller. The request is sent over the optical distribution network and indicates an operating wavelength of the first optical line terminal and of the at least one optical network unit. The network controller configures at least two of the optical filters to allow a passing through of the operating wavelength or of a further operating wavelength. The optical communication between the first optical line terminal and the at least one optical network unit in the operating or in the further operating wavelength is established through the optical filters.
A method for optical communication in a bidirectional optical communication network comprising a plurality of optical line terminals, a plurality of optical network units and an optical distribution network comprising a plurality of optical filters controlled by a network controller, the method comprising the steps of
A network controller for controlling an optical communication in an optical communication system, the network controller comprising an interface adapted to receive from an optical line terminal a request for optical communication with at least one optical network unit over an optical distribution network, the request indicating an operating wavelength of the optical line terminal and of the at least one optical network unit, the network controller further comprising a processor being adapted to process the request received by the interface and to configure a plurality of optical filters to allow a passing through of optical signals in the operating wavelength or in a further operating wavelength if the operating wavelength is unavailable.
An optical communication system, comprising a plurality of optical line terminals adapted to send and receive optical signals, a plurality of optical network units adapted to send and receive optical signals, the optical communication system further comprising a network controller adapted to receive from the plurality of optical line terminals requests for communication with the plurality of optical network units over an optical distribution network, the requests indicating an operating wavelength of the plurality of optical line terminals and of at least one optical network unit of the plurality of optical network units, the optical communication system further comprising a plurality of optical filters configurable by the network controller to allow a passing through of optical signals in the operating wavelength of the plurality of optical line terminals and of the at least one optical network unit of the plurality of optical network units or in a further operating wavelength of the plurality of optical line terminals and of the at least one optical network unit of the plurality of optical network units if the operating wavelength of the plurality of optical line terminals and of the at least one optical network unit of the plurality of optical network units is unavailable.
Dependencies are inferred from the claim text.