Method for independently controlling the wavelength...

H - Electricity – 04 – J

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H04J 14/02 (2006.01) H04B 10/08 (2006.01) H04B 10/18 (2006.01)

Patent

CA 2232159

A method of and apparatus for controlling the relative amplitudes of the individual wavelength components of a wavelength division multiplexed optical signal (14) employs an adaptive optical wavelength filter (20) through which the optical signal (14) is transferred. The filter (20) is controlled dependent upon an analysis of the powers of the individual wavelength components (.lambda.1, .lambda.2...) of the optical signal so that the output powers may be balanced to have some predetermined relationship. One of a plurality of in-line optical filters, a demultiplexer and a further adaptive optical wavelength filter may be employed to analyse the powers of the wavelength components of the optical signal.

Cette invention concerne un procédé et un dispositif permettant de commander les amplitudes relatives des différentes composantes de longueur d'onde d'un signal optique (14) multiplexé par répartition en longueur d'onde et fait appel à un filtre de longueur d'onde optique adaptatif (20) au travers duquel est transféré le signal optique (14). Le filtre (20) est commandé en fonction de l'analyse des puissances des différentes composantes de longueur d'onde (.lambda.¿1?, .lambda.¿2?...) du signal optique, de sorte que les puissances de sortie peuvent être équilibrées pour donner une relation prédéfinie. On peut utiliser un filtre parmi plusieurs filtres optiques en ligne, un démultiplexeur et un autre filtre de longueur d'onde optique adaptatif pour analyser les puissances des composantes de longueur d'onde du signal optique.

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