Optical transceiver and method of controlling optical powers of optical channels
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsWei-Ping Huang, Francesco Testa, Gemma Vall-Llosera
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Abstract
Systems and methods for controlling optical powers of optical channels in an optical communications network comprising a plurality of nodes is described herein. The method comprises obtaining a reference optical power. The method also includes determining an optical power of an optical channel generated by an optical transmitter of a node. The method further includes applying an attenuation to the optical channel to reduce the optical power of the optical channel to the reference optical power. In some implementations, the method is performed by a network controller operating in the optical communications network.
Claims13
A method of controlling optical powers of optical channels in an optical communications network comprising a plurality of nodes, the method comprising:
- determining whether a measured optical power has satisfied a pre-determined threshold;
- responsive to determining the measured optical power has satisfied the pre-determined threshold, determining whether the measured optical power is due to a change of an operating mode of the optical communications network;
- responsive to determining the measured optical power is not due to a change of an operating mode of the optical communication network, determining whether a maximum tuning range of an optical attenuator has been reached;
- responsive to determining the maximum tuning range has not been reached, obtaining a reference optical power;
- determining an optical power of an optical channel generated by an optical transmitter of a node;
- and
- applying an attenuation to the optical channel to reduce the optical power of the optical channel to the reference optical power.
A network controller configured to control optical powers of optical channels in an optical communications network comprising a plurality of nodes, the network controller comprising:
- processing circuitry configured to perform operations comprising
- determining whether a measured optical power has satisfied a pre-determined threshold;
- responsive to determining the measured optical power has satisfied the pre-determined threshold, determining whether the measured optical power is due to a change of an operating mode of the optical communications network;
- responsive to determining the measured optical power is not due to a change of an operating mode of the optical communication network, determining whether a maximum tuning range of an optical attenuator has been reached;
- responsive to determining the maximum tuning range has not been reached, obtaining a reference optical power,
- determining an optical power of an optical channel generated by an optical transmitter of a node, and
- applying an attenuation to the optical channel to reduce the optical power of the optical channel to the reference optical power.
A computer program product comprised on a non-transitory computer readable medium, the computer program product comprising executable instructions that when executed by a processor of a network controller of a network controller configured to control optical powers of optical channels in an optical communications network comprising a plurality of nodes, causes the processor performs operations comprising:
- determining whether a measured optical power has satisfied a pre-determined threshold;
- responsive to determining the measured optical power has satisfied the pre-determined threshold, determining whether the measured optical power is due to a change of an operating mode of the optical communications network;
- responsive to determining the measured optical power is not due to a change of an operating mode of the optical communication network, determining whether a maximum tuning range of an optical attenuator has been reached;
- responsive to determining the maximum tuning range has not been reached, obtaining a reference optical power;
- determining an optical power of an optical channel generated by an optical transmitter of a node;
- and
- applying an attenuation to the optical channel to reduce the optical power of the optical channel to the reference optical power.
Dependencies are inferred from the claim text.