Bidirectional wave division multiplex systems

   
   

A bidirectional WDM optical system in which crosstalk between interleaved channels of different wavelengths is suppressed by the inclusion in the amplifier gain block of four-port filters that discriminate on the basis of the wavelength of the interleaved signals passing through the four port filters.

Un système optique bidirectionnel de WDM dans lequel l'interférence entre les canaux intercalés de différentes longueurs d'onde est supprimée par l'inclusion dans le bloc de gain d'amplificateur de filtres à quatre orifices qui distinguent sur la base de la longueur d'onde des signaux intercalés passant par les quatre filtres gauches.

 
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