Survival dwdm system

Details Survival dwdm system Survival dwdm system

H - Electricity

04

B

H04B 10/17 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2442120

A traffic survival method in optical fiber telecommunication systems and in particular DWDM and having amplification sites (10) with ADD/DROP of channels and arranged between fiber spans is described and claimed. In accordance with the method the ASE noise produced in amplifiers (13) in the site is amplified in power to compensate at output the power of channels (n) lost by breakage of the site input span. An amplification device with ADD/DROP and a telecommunication system with it is also described and claimed.

L'invention concerne un procédé de survie de trafic dans des systèmes de télécommunications à fibres optiques, particulièrement dans des systèmes DWDM, comportant des sites d'amplification (10) avec fonction d'insertion-extraction de canaux entre des tronçons de fibres. Selon ce procédé, le bruit de type émission spontanée amplifiée (ASE) produit par les amplificateurs (13) dans le site en question est amplifié en puissance pour compenser la puissance disponible en sortie des canaux (n) perdus par la rupture du tronçon d'entrée du site. L'invention concerne également un système d'amplification à fonction d'insertion-extraction ainsi qu'un système de télécommunications.

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