Noise reduction in optical communications networks

Details Noise reduction in optical communications networks Noise reduction in optical communications networks

H - Electricity

04

J

H04J 14/02 (2006.01)

Patent

CA 2472322

The add path of a DWDM add/drop node comprises a n:1 coupler for combining n signal sources. The combined signal is amplified and then demultiplexed. Each output of the demultiplexer is passed through a variable optical attenuator (VOA) and the VOA outputs multiplexed to form the add signal. Channels carrying no add signal and not used to control the added signals are attenuated to zero to remove a broadband noise contribution from those channels. The signal sources are run at maximum power and the signal of those channels attenuated by the respective VOAs to control their amplitude and optimise the optical signal to noise ratio of the add signal.

Le chemin d'insertion d'un noeud d'insertion-extraction DWDM comprend un coupleur n:1 pour combiner n sources de signaux, le signal combiné étant amplifié puis démultiplexé. Chaque sortie du démultiplexeur traverse un atténuateur optique variable (VOA) et les sorties du VOA sont multiplexées pour former le signal d'insertion. Les canaux ne portant pas de signal d'insertion et ne servant pas à la commande des signaux insérés sont atténués jusqu'à zéro pour supprimer un apport de bruit à large bande de ces canaux. Les sources de signaux fonctionnent à une puissance maximale et le signal desdits canaux est atténué par les VOA respectifs pour commander leur amplitude et optimiser le rapport signal optique/bruit du signal d'insertion.

Affiliated with

Also associated with

Rating

Noise reduction in optical communications networks does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Noise reduction in optical communications networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise reduction in optical communications networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1778573