Telefonaktiebolaget Lm Ericsson (Publ)

Antonio Melis

Matteo Costantini

Lorenzo Siri

A method is provided for establishing a communication path in an optical network, the communication path comprising a plurality of sections, wherein the power level of a section is controlled by a respective power control unit of a network node. The method comprises the steps of, in response to a request to establish a communication path, step, controlling at least one power control unit to perform a first power-up mode of operation. The first power-up mode of operation comprises the step of setting a power control factor of a respective section of the communication path directly to a value estimated to provide a target power level, step

Method and apparatus for establishing a communication path in an optical network

A method () of changing operating mode of an optical amplifier in an amplifier chain in an optical network, the optical amplifier initially configured to operate in a first mode to apply a substantially constant first gain to an optical signal comprising a plurality of optical channels, the method comprising, after a time period unique to the optical amplifier within the amplifier chain (), configuring the optical amplifier to operate in a second mode to apply a second gain to the optical signal so that the optical power of the optical signal is maintained at a target optical power dependent on a current plurality of optical channels in the optical signal ().

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Genoa, Italy

Antonio Melis