Linearization enhanced operation of single-stage and dual...

Details Linearization enhanced operation of single-stage and dual... Linearization enhanced operation of single-stage and dual...

H - Electricity

04

B

H04B 10/18 (2006.01) G02F 1/35 (2006.01) H04B 1/62 (2006.01) H04B 10/155 (2006.01)

Patent

CA 2229114

A distortion circuit for linearizing third-, fifth- and seventh-order distortion components in a non-linear optical communications system includes at least one group of series connected diodes coupled to a common input terminal for receiving a signal source at one end and to an inductor and a capacitor at the other end, a resistance coupled to the common input terminal and a bias source for providing a bias current to the group of series connected diodes. The distortion circuit may be implemented as a predistortion circuit in the headend of the optical communications system or as a postdistortion circuit at the receiving end.

Circuit de distorsion permettant de linéariser des composantes de distorsion des troisième, cinquième et septième ordres dans un système de communication optique non linéaire. Comprend au moins un groupe de diodes montées en série et couplées, à une extrémité, à une borne d'entrée commune pour recevoir une source de signal et, à l'autre extrémité, à une bobine d'induction et à un condensateur, une résistance couplée à la borne d'entrée commune et une source de polarisation fournissant un courant de polarisation au groupe de diodes montées en série. Le circuit de distorsion peut prendre la forme d'un circuit de prédistorsion à la tête de ligne d'un système de communication optique ou d'un circuit de postdistorsion à l'extrémité réceptrice.

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