Receiver for receiving optical signals

Details Receiver for receiving optical signals Receiver for receiving optical signals

H - Electricity

04

J

H04J 14/02 (2006.01) H04B 10/04 (2006.01) H04B 10/158 (2006.01) H04B 10/18 (2006.01)

Patent

CA 2236862

A receiver (EMP1, ..., EMPn) is disclosed for receiving optical signals from an optical transmission network (NET) serving to transmit coded, multiplexed optical signals. The receiver (EMP1, ..., EMPn) includes a means (DEK1) for detecting the optical signals to be received, e.g., a Fabry-Perot filter, and processing means (O/E1, O/E2, 5) to compensate noise present in the detected optical signals by combining the detected optical signals with compensation signals. The means (DEK1) is adapted to transmit optical signals to be received and reflect optical signals not to be received. A further means (K1), e.g., an optical coupler, is provided for deriving the compensation signals from at least part of the reflected optical signals and then applying the compensation signals to the processing means (O/E1, O/E2, 5). The receiver has the advantage that the signal to be received is not contained, or is contained only minimally, in the compensation signal, so that it does not affect, or affects only insignificantly, the degree of compensation when being combined with the detected signal.

Récepteur (EMP1, ...EMPn) permettant de recevoir des signaux optiques d'un réseau de transmission (NET) de signaux optiques codés multiplexés. Le récepteur (EMP1, ...EMPn) comprend un moyen (DEK1) de détecter les signaux optiques à recevoir, p. ex. un filtre Fabry-Pérot, et un moyen de traitement (O/E1, O/E2, 5) pour compenser le bruit présent dans les signaux optiques détectés en combinant ces derniers à des signaux de compensation. Ledit moyen (DEK1) est adapté pour transmettre des signaux optiques à recevoir et réfléchir les signaux optiques non destinés à être reçus. Un autre moyen (K1), p. ex. un coupleur optique, permet d'obtenir les signaux de compensation à partir d'au moins une partie des signaux optiques réfléchis, puis d'appliquer ces derniers au moyen de traitement (O/E1, O/E2, 5). Un avantage du récepteur est que le signal à recevoir n'est pas contenu, ou n'est contenu que minimalement, dans le signal de compensation, de sorte qu'il n'a aucune influence, sinon une influence insignifiante, sur le degré de compensation lorsqu'il est combiné au signal détecté.

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