Device and method for compensating polarization mode...

H - Electricity – 04 – B

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H04B 10/18 (2006.01) H04B 10/135 (2006.01)

Patent

CA 2369113

An optical communication system comprising: a transmitter for sending a digital signal, an optical transmission line, a receiver comprising a modulation and dispersion device, the said modulation and dispersion device comprising: a) a modulation device for modulating the phase of the said digital optical signal by a modulation having: a1) a predetermined modulation frequency, a2) a periodic variation in time, a3) a maximum amplitude of said periodic variation; b) a chromatic dispersion element providing an anomalous dispersion when the said periodic variation has a positive modulation amplitude and a normal dispersion when the said periodic variation has a negative modulation amplitude.

Un système de communication optique comprend: un émetteur pour envoyer un signal numérique, une ligne d'émission optique, un récepteur comportant un dispositif de modulation et de dispersion. Ces dispositifs de modulation et de dispersion comprennent: a) un dispositif de modulation pour moduler la phase du signal optique numérique par une modulation présentant: a1) une fréquence de modulation prédéterminée, a2) une variation périodique dans le temps, a3) une amplitude maximum de ladite variation périodique; b) un élément de dispersion chromatique provoquant une dispersion anormale lorsque ladite variation présente un amplitude de modulation positive et une dispersion normale lorsque cette variation périodique présente une amplitude de modulation négative.

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