H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/18 (2006.01) H04J 14/02 (2006.01)
Patent
CA 2248626
It is an object of the invention to provide a WDM optical signal transmission apparatus, which improves transmission characteristics by allocating all the channels to the normal dispersion region of an optical transmission line without magnifying dispersion compensators. The transmission line is composed of a main optical fiber, which covers the greater part of the optical transmission line, and two dispersion compensating optical fibers (the second dispersion compensators) located on both the ends of the main optical fiber. Since the transmission characteristic of the transmission line in the normal dispersion region is superior to that in the anomalous dispersion region, all the channels are allocated to the normal dispersion region of the main optical fiber. The dispersion compensators located on both sending and receiving ends are composed of the first dispersion compensators for compensating accumulated dispersions of the respective channels and the second dispersion compensators for compensating negative dispersion of the center channel accumulated in the main optical fiber. Since the second dispersion compensators can be used as the parts of the transmission line, the dispersion compensators located on both the sending and receiving ends can be small-size as compared with those in the conventional system.
L'invention a notamment pour objet un appareil de transmission de signaux optiques MRL (multiplexage par répartition en longueur d'onde), qui améliore les caractéristiques de transmission en affectant tous les canaux à la zone de dispersion normale d'une ligne de transmission optique sans accroître la taille des compensateurs de dispersion. La ligne de transmission comprend une fibre optique principale, qui couvre la plus grande partie de la ligne de transmission optique, et deux fibres optiques à compensation de dispersion (les deuxièmes compensateurs de dispersion) situées aux deux extrémités de la fibre optique principale. Comme la caractéristique de transmission de la ligne de transmission dans la zone de dispersion normale est supérieure à celle de la zone de dispersion anormale, tous les canaux sont affectés à la zone de dispersion normale de la fibre optique principale. Les compensateurs de dispersion situés aux extrémités de départ et d'arrivée comprennent les premiers compensateurs de dispersion, qui comprennent les dispersions accumulées des canaux correspondants, et les deuxièmes compensateurs optiques, qui compensent la dispersion négative du canal central accumulée dans la fibre optique principale. Comme les deuxièmes compensateurs de dispersion peuvent constituer les parties de la ligne de transmission, les compensateurs de dispersion situés aux extrémités de départ et d'arrivée peuvent être de petite taille par rapport à ceux du système habituel.
Corporation Nec
Smart & Biggar
LandOfFree
Wdm optical signal transmission apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wdm optical signal transmission apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wdm optical signal transmission apparatus will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1423035