System and method for controlling noise figure

Details System and method for controlling noise figure System and method for controlling noise figure

H - Electricity

04

B

H04B 10/00 (2006.01) H01S 3/067 (2006.01) H01S 3/30 (2006.01) H04B 10/08 (2006.01) H04B 10/17 (2006.01) H04B 10/18 (2006.01) H01S 3/094 (2006.01) H01S 3/131 (2006.01) H04B 15/00 (2006.01)

Patent

CA 2455817

One aspect of the invention includes an optical amplifier operable to amplify a plurality of optical wavelength signals at least in part through Raman amplification. The amplifier includes an input operable to receive a plurality of wavelength signals and an output operable to communicate an amplified version of at least some of the plurality of wavelength signals. The amplifier further includes a pump assembly operable to generate one or more pump signals and a gain medium operable to receive the plurality of wavelength signals and the one or more pump signals and to facilitate amplification of at least some of the plurality of wavelength signals. The amplifier has associated with it a noise figure having a shape varying as a function of wavelength. At least one of the one or more pump signals is operable to have its power varied to selectively control the shape of the noise figure.

Selon un aspect, l'invention concerne un amplificateur optique permettant d'amplifier une pluralité de signaux de longueur d'onde optiques, au moins partiellement par amplification Raman. Ledit amplificateur comprend une entrée destinée à recevoir une pluralité de signaux de longueur d'onde et une sortie destinée à communiquer une version amplifiée d'au moins certains signaux de longueur d'onde. L'amplificateur comprend également un ensemble de pompage destiné à produire au moins un signal de pompage et un milieu de gain destiné à recevoir la pluralité de signaux de longueur d'onde et le ou les signaux de pompage, et à faciliter l'amplification des signaux de longueur d'onde précités. Cet amplificateur est associé à un facteur de bruit dont la forme varie en fonction d'une longueur d'onde. Au moins l'un des signaux de pompage fonctionne de sorte que sa puissance varie afin de réguler sélectivement la forme du facteur de bruit.

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