Xieon Networks S.a.r.l.

Nokia Siemens Networks Oy

Sylvia Smolorz

Harald Rohde

Erich Gottwald

Thomas Treyer

Ernst-Dieter Schmidt

Sönke Rosner

Curt Badstieber

An optical network has an optical line termination coupled to a backbone network, in particular to an optical long haul network and a local exchange coupled to an optical access network. The local exchange provides an optical connection between an optical network unit of a tree topology and the optical line termination, which is part of a ring topology. There is also described a method for processing data in such an optical network.

Optical network and method for processing data in an optical network

A method and a device for adjusting a laser in an optical network. At least one alive message is transmitted from a first optical component towards a second optical component. A confirmation message is transmitted from the second optical component to the first optical component determining the wavelength of the laser to be used based on the alive message received by the second optical component. Furthermore, an optical communication system is provided with an optical element.

Method and device for adjusting a laser in an optical network

A collimator for a laser assembly includes a first electrostatically controllable liquid lense having a first optical axis and a second electrostatically controllable liquid lense having a second optical axis aligned with the first optical axis. A laser is provided and has such a collimator. Finally, a transmitter uses the laser for optical data transmission.

Electrically controllable collimator in a laser resonator

A method and a device for operating a laser in an optical component are provided, wherein the laser is a local oscillator of the optical component; and wherein a linewidth of the laser is broadened. Furthermore, an optical communication system is suggested comprising said optical component.

Method of operating a laser in an optical component, optical component, and optical communication system

Bidirectional data signals are exchanged between a central unit and a plurality of network terminals. The optical carrier frequencies of the downstream and upstream signals are chosen so that reflections do not interfere with the selected signal at the optical network unit and not with the received upstream signals at the central unit. The optical network units select their associated downstream signal and generate an associated upstream signal.

Method and arrangement for transmitting signals in a point to multipoint network

A method and a device for data processing in an optical network element are suggested, wherein the optical network element changes between a low-speed mode and a high-speed mode of data transmission. In this manner, the optical network element has efficient power savings because it can effectively operate in the low-speed mode which requires less power consumption.

Method and device for data processing

A method and an optical network component for data processing in an optical network. A first signal and a second signal are influenced by a tunable element. The first signal is an incoming optical signal, and the second signal is a local oscillator signal generated by a laser. The laser has an optical gain element that is tuned by the tunable element. A communication system is provided with the optical network component.

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Mountain View, CA, United States of America

Sylvia Smolorz