Alcatel Lucent

Peter J Vetter

Haibo Wen

Dusan Suvakovic

Hungkei Keith Chow

Wolfgang Poehlmann

Man Fai Lau

David A Duque

Joseph L Galaro

Doutie T Van Veen

Man-Fai Lau

Robert L Farah

Tuning an optical network unit (ONU) to an appropriate communication wavelength may be performed by initiating an activation procedure responsive to receiving a wavelength configuration message, and identifying an instruction in the wavelength configuration message to modify a present wavelength used by the network unit to a different wavelength. The process may also provide assigning an optical network unit identifier (ONU-ID) to the network unit, modifying the present wavelength to the different wavelength, and transmitting subsequent data messages from the network unit at the different wavelength.

Optical network terminal (ONT) wavelength tuning and correpsonding calibration procedure

A manner of providing an energy-efficient two-stage PON using a multistage-PON repeater to forward data traffic and other communications between the first stage and the second stage. The multistage-PON repeater receives BI-PON transmission frames from and OLT and decimates them, forwarding data intended for end devices of the second stage. The multistage-PON repeater rate adapts the transmissions so that faster speeds may be associated with PON first stage communications and slower speeds are associated with PON second stage communications. Many though not all of the multistage-PON components are configured to operate at the slower clock speed, conserving energy. Upstream transmissions from the end devices of the second stage are buffered in the multistage-PON repeater and forwarded to the OLT according to an allocation schedule received from the OLT in a BI-PON frame.

Apparatus and method for two-stage optical network

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Summit, NJ, United States of America

Peter J Vetter