Wdm transmission repeater, wdm transmission system and wdm...

Details Wdm transmission repeater, wdm transmission system and wdm... Wdm transmission repeater, wdm transmission system and wdm...

H - Electricity

04

J

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

Patent

CA 2325580

The present invention relates to a WDM transmission system and the like suitable for optical communications between local stations having a relatively short repeater interval. In particular, the WDM transmission repeater employed in the WDM transmission system demultiplexes a plurality of signal lights propagating through a transmission line into first and second groups, takes out the second group, comprises a multiplexer for sending into the transmission line a new WDM signal group in which the first group thus demultiplexed and a third group of signal lights different from those of the first group are multiplexed, and has a special structure for reducing the influence of the not-demultiplexed crosstalk components within the second group upon the optical communications.

Système de transmission à multiplexage par répartition en longueur d'onde adapté pour les communications optiques de relativement courte portée, telles qu'entre des stations locales. Ledit système comporte un répéteur de transmission à multiplexage par répartition en longueur d'onde, comportant un multiplexeur qui divise une pluralité de faisceaux de lumière signaux en deux groupes et extrait un deuxième groupe. Le multiplexeur combine également le groupe extrait avec un troisième groupe de faisceaux lumineux signaux qui est différent des premier et deuxième groupes. Des moyens particuliers destinés à réduire les effets des composants de fuite non ramifiés dans le deuxième groupe lors de communications optiques sont également décrits.

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