Xieon Networks S.a.r.l.

Siemens Aktiengesellschaft

Anton Schex

Lutz Rapp

Guido Gentner

Benoit Clouet

Carlo Marques

Tiago Mestre

Rapp Lutz

A Raman pumping device () for amplifying a data optical signal in a fiber optic transmission system, comprising first and second ports () through which the data optical signal may respectively enter and exit the Raman pumping device (), a Raman pump source () for generating a Raman pump signal, and at least one combiner () for combining the Raman pump signal with the data optical signal. The Raman pumping device () allows for selectively combining the Raman pump signal generated by the same Raman pump source (), or at least parts of the same Raman pump source () codirectionally or counterdirectionally with the data optical signal.

Bidirectional and configurable directional Raman pumping apparatus

The invention refers a method and an arrangement for channel set up in an optical network. An optical signal path is configured for a certain optical channel signal (OC) of a WDM-signal. This channel signal (OC) is on-off-modulated by a modulation test signal (MT) having a predetermined lower frequency and is generating a channel test signal (OT). This channel test signal (OT) is combined with other optical channels (OC-OCn) to the WDM-signal (WS) and transmitted via said path. At a start node () or a downstream node () a measurement signal (EMI, EM) is derived from the complete WDM-signal (WS) without wavelength de-multiplexing. The measurement signal (EMI, EM) is compared with a correlation signal (MC) and an obtained power level (PC) is used to adjust the channel power (PC, PC, PC) to achieve predetermined target power values (PC-PC) at different power monitoring points (). The adjustment step is repeated for all downstream nodes () and all further channel signals (OC-OCn).

Method and arrangement for channel set up in an optical WDM-network

Control method and optical data transmission path having a device for determining the tilting of the spectrum, and having a quick control and slow control for compensating the tilting of the spectrum.

Control method and optical data transmission path for compensating changes in SRS-induced power exchange

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Germering, Germany

Anton Schex