Reduction of collision induced timing jitter by periodic...

Details Reduction of collision induced timing jitter by periodic... Reduction of collision induced timing jitter by periodic...

H - Electricity

04

B

H04B 10/00 (2006.01) H04B 10/18 (2006.01)

Patent

CA 2280972

Collisions between solitons in different frequency channels are one of the major sources of errors in transmission systems that utilize wavelength division multiplexing (WDM). Moreover, because standard transmission lines have lumped amplification, the four-wave mixing fields from soliton collisions grow uncontrollably, adding amplitude and timing jitter to the jitter due to ideal soliton collisions. These problems are addressed by using specific dispersion map (100) to implement dispersion management, by which it is possible to significantly reduce the collision-induced timing jitter and to improve system performance even in comparison with that provided by an ideal, exponentially decreasing dispersion fiber (40).

Des collisions entre solitons dans différents canaux de fréquences constituent une des sources principales d'erreurs dans des systèmes de transmission mettant en oeuvre le multiplexage par répartition en longueur d'onde (MRL). En outre, étant donné que les lignes de transmission classiques possèdent une amplification localisée, les champs de mélange à quatre ondes provenant des collisions de solitons augmentent de façon incontrôlable, ajoutant de l'amplitude et de la gigue temporelle à la gigue consécutive à la collision idéale de solitons. On résout ces problèmes en utilisant une carte de dispersion spécifique (100) servant à mettre en oeuvre une gestion de la dispersion et grâce à laquelle on peut réduire de manière importante la gigue temporelle induite par les collisions et améliorer les performances du système, même par comparaison avec les performances d'une fibre (40) à dispersion idéale décroissant de façon exponentielle.

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