Crosstalk suppression in a multipath optical amplifier

H - Electricity – 04 – B

Patent

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H04B 10/16 (2006.01) H04B 10/17 (2006.01)

Patent

CA 2217077

A multi-amplification path optical amplifier including a first amplification path for propagating and amplifying a first in-band optical communication signal, including a spectrally selective filter for substantially blocking the propagation and amplification of an out-of-band optical communication signal along the first amplification path, and a second amplification path for propagating and amplifying a second in-band optical communication signal, including a spectrally selective filter for substantially blocking the propagation and amplification of an out-of-band optical communication signal along the second amplification path, wherein the location of the spectrally selective filters in each respective amplification path is selected so that a target noise figure performance and a target output power performance can be obtained from the device. The spectrally selective insertion losses suppress crosstalk or optical leakage that gives rise to multipath interference, return loss, and self oscillation.

Amplificateur optique à multiples trajets d'amplification. Comprend un premier trajet d'amplification pour la propagation et l'amplification d'un premier signal de communication optique dans la bande, y compris un filtre à sélection spectrale pour bloquer sensiblement la propagation et l'amplification d'un signal de communication optique hors bande le long du premier trajet d'amplification, et un deuxième trajet d'amplification pour la propagation et l'amplification d'un deuxième signal de communication optique dans la bande, y compris un filtre à sélection spectrale pour bloquer sensiblement la propagation et l'amplification d'un signal de communication optique hors bande le long du deuxième trajet d'amplification, l'emplacement des filtres à sélection spectrale dans chaque trajet d'amplification étant choisi de manière que le dispositif permette d'obtenir une performance de facteur de bruit visée et une performance de puissance de sortie visée. L'affaiblissement d'insertion spectralement sélectif supprime la diaphonie ou les fuites optiques qui sont causes de brouillage dans la propagation par trajets multiples, de pertes par réflexion et d'oscillations internes spontanées.

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