System and method for rapidly achieving optimum dispersion...

G - Physics – 02 – B

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G02B 6/00 (2006.01) H04B 10/18 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2443866

A system and method for optimizing dispersion in an optical transmission line is provided. The system and method comprise measuring the amplitude of a d.c. voltage component of a synchronously demodulated data signal of at least one wavelength channel by an in-phase carrier at the baud frequency of the wavelength channel. In an alternative embodiment, the system and method comprise measuring the IF amplitude of the resulting a.c. signal of a data signal of the at least one wavelength channel comprising a received RZ signal mixed with a local oscillator, whose frequency differs from the wavelength channel baud by a relatively small amount, somewhere on the order of about 100 kHz.

Il s'agit d'un système et d'une méthode qui permettent d'optimiser la dispersion dans une ligne de transmission optique. Lesdits système et méthode comprennent la mesure de l'amplitude d'une composante de tension continue d'un signal synchrone de données démodulé d'au moins un canal de longueur d'onde par une porteuse en phase, à la fréquence en bauds du canal de la longueur d'onde. Dans une autre version, le système et la méthode comprennent la mesure de l'amplitude FI du signal alternatif résultant d'un signal de données au moins un canal de longueur d'onde. Ce signal alternatif comprend un signal RZ de réception mélangé avec un oscillateur local, dont la fréquence diffère en bauds du canal de longueur d'onde d'une faible valeur de l'ordre d'environ 100 kHz.

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