Optical demultiplexing system

Details Optical demultiplexing system Optical demultiplexing system

H - Electricity

04

J

H04J 14/08 (2006.01) H01S 5/50 (2006.01)

Patent

CA 2096771

An optical demultiplexing system enables a wanted channel to be extracted as an optical signal from an optical carrier modulated by a TDM data flow. The system makes use of a semiconductor optical amplifier, whose gain is modulated by saturation effect. The amplifier receives both the modulated optical carrier and one or more sampling optical carriers, with wavelengths different from that of the modulated carrier. One or more optical filters extract from the amplifier output the sampling carrier or carriers modulated by the wanted data signal or signals.

L'invention est un système de démultiplexage optique qui permet d'extraire un signal lumineux incorporé à une porteuse lumineuse modulée temporellement par un flot de données. Ce système utilise un amplificateur optique à semi-conducteur dont le gain est modulé par un effet de saturation. Cet amplificateur reçoit la porteuse lumineuse modulée et une ou plusieurs porteuses d'échantillonnage lumineuses de longueurs d'onde différentes de celle de la porteuse modulée. Un ou plusieurs filtres optiques extraient du signal de sortie de l'amplificateur la ou les porteuses d'échantillonnage modulées par le ou les signaux de données désirés.

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