Methods and apparatus for reducing four-wave mixing

Details Methods and apparatus for reducing four-wave mixing Methods and apparatus for reducing four-wave mixing

H - Electricity

04

B

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

Patent

CA 2317599

Four-wave mixing of transmitted signals in a lightwave transmission system is reduced by 1) grouping the signals in pairs of adjacent frequencies, 2) increasing the frequency of every other pair by a fixed amount, where the fixed amount is less than the permitted variation of the ITU grid.

La présente invention concerne la réduction de mélange à quatre ondes de signaux transmis dans un système (fig. 1) de transmission d'ondes lumineuses, obtenue au moyen (1) de groupage des signaux en paires de fréquences voisines, et (2) d'augmentation de la fréquence de chaque autre paire d'une quantité fixe, cette quantité fixe étant inférieure à la variation permise par la grille de l'UIT.

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