Apparatus for optoelectronic transversal filter

H - Electricity – 03 – H

Patent

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H03H 15/00 (2006.01) G02B 6/28 (2006.01)

Patent

CA 2072052

An improved fiber optic delay line filter is disclosed having each fiber optic light path terminate on a corresponding photodetector adapted to convert the received optical signal to a commensurate electrical signal in bi-polar proportion to an electrical bias level provided to the photodetector where the bias level for each photodetector is independently settable and the outputs of all of the photodetectors are summed to produce an output electrical signal that is filtered by the arranged fiber optic delay line transversal filter.

Cette invention concerne un filtre de ligne à retard à fibre optique amélioré dans lequel chaque fibre optique donne sur un photodétecteur distinct adapté pour convertir le signal optique reçu en un signal électrique de même signe proportionnel à la tension de polarisation appliquée audit photodétecteur, ladite tension de polarisation étant réglable individuellement et les signaux de sortie de l'ensemble des photodétecteurs étant sommée pour produire un signal électrique de sortie unique à être filtré par le filtre de ligne à retard à fibre optique transversal objet de l'invention.

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