Wavelength locking and power control systems for...

G - Physics – 02 – B

Patent

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G02B 6/12 (2006.01) H04B 10/12 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2612165

A transmissive active channel element is provided in each signal channel of a monolithic multi-channel TxPIC where each channel also includes a modulated source. The active channel element functions both as a power control element for both monitoring and regulating the output channel signal level of each signal channel and as a modulator for channel wavelength tagging or labeling to provide for wavelength locking the modulated sources. The power regulating function is also employed to control the channel signal power outputs of each channel to be uniform across the channel signal array. All of these functions are carried out by a feedback loop utilizing digital signal processing.

Selon l'invention, chaque canal de signalisation d'un circuit photonique intégré de transmission TxPIC multicanal monolithique comprend un élément de canal actif transmissif, chaque canal comprenant également une source modulée. Cet élément de canal actif sert d'élément de commande de puissance pour contrôler et réguler le niveau de sortie du signal de chaque canal de signalisation et il sert également de modulateur pour marquer ou étiqueter la longueur d'onde du canal en vue du verrouillage en longueur d'onde des sources modulées. La fonction de régulation de puissance est également employée pour réguler les puissances de sortie de signal de chaque canal pour procurer une uniformité sur l'ensemble des signaux des canaux. Toutes ces fonctions sont exécutées par une boucle de rétroaction faisant appel à un traitement numérique des signaux.

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