Optical transmission system employing erbium-doped optical...

Details Optical transmission system employing erbium-doped optical... Optical transmission system employing erbium-doped optical...

H - Electricity

04

B

H04B 10/12 (2006.01) H04B 10/17 (2006.01)

Patent

CA 2496185

In an optical communication system that includes a transmitting terminal, a receiving terminal, and an optical transmission path optically coupling the transmitting and receiving terminals and having at least one rare-earth doped optical amplifier therein, a second optical amplifier is provided The second optical amplifier includes a first portion of the optical transmission path having a first end coupled to the transmitting terminal and a second end coupled to a first of the rare-earth doped optical amplifiers. In addition, the second optical amplifier includes a pump source providing pump energy to the first portion of the optical transmission path at one or more wavelengths that is less than a signal wavelength to provide Raman gain in the first portion at the signal wavelength.

L'invention concerne un système de communication optique qui comprend un terminal émetteur, un terminal récepteur, et une voie de transmission optique couplée optiquement aux terminaux émetteur et récepteur et ayant au moins un amplificateur optique dopé de terres rares à l'intérieur, et un second amplificateur optique. Ledit second amplificateur optique comprend une première partie de la voie de transmission optique présentant une première extrémité couplée au terminal émetteur et une seconde extrémité couplée à un premier amplificateur optique dopé de terres rares. De plus, le second amplificateur optique comprend une source de pompage fournissant de l'énergie de pompage à la première partie de la voie de transmission optique à une ou plusieurs longueurs d'onde inférieures à une longueur d'onde de signal de manière à fournir un gain Raman dans la première partie au niveau de la longueur d'onde de signal.

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