Feedback control system for a mems based optical switching...

G - Physics – 02 – B

Patent

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G02B 26/08 (2006.01) B81B 7/02 (2006.01) G02B 6/35 (2006.01) H04Q 3/52 (2006.01)

Patent

CA 2463917

A control system for controlling individual mirrors in a MEMS-based optical switching fabric is presented. The control system includes a position sensitive detector positioned to receive a control beam reflected from individual mirrors of a first mirror array. In some embodiments, the control beam can be time-multiplexed with a calibration beam. The position of the control beam corrected in response to the position of the calibration beam can be compared with a position calculated on the port assignment of the individual mirrors in order to provide feedback to a feed-back based control system for the individual mirrors.

L'invention concerne un système de commande servant à commander des miroirs individuels dans une matrice de commutation optique basée sur des MEMS. Le système de commande comprend un détecteur sensible à l'emplacement disposé de façon à recevoir un faisceau de contrôle réfléchie par les miroirs individuels d'un premier réseau de miroirs. Dans certains modes de réalisation, le faisceau de contrôle peut être multiplexé dans le temps au moyen d'un faisceau d'étalonnage. La position du faisceau de contrôle corrigée en réponse à la position du faisceau d'étalonnage peut être comparée à une position calculée sur la base de l'assignation de voie des miroirs individuels, afin de fournir une réaction à un système de commande de rétroaction destiné aux miroirs individuels.

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