Raman amplifier and optical communication system

G - Physics – 02 – F

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G02F 1/35 (2006.01) H04B 10/17 (2006.01)

Patent

CA 2577476

A Raman amplifier for amplifying a carrier light by use of Raman amplifying medium, comprising an excitation light source (3) for supplying an excitation light, which has been intensity modulated by a high frequency equal to or greater than 100 MHz, to the Raman amplifying medium; and a WDM multiplexer (5) for multiplexing and guiding the carrier light and the excitation light to the Raman amplifying medium; wherein the Raman amplifying medium has a low dispersion characteristic and exhibits a small difference in passage/propagation time between the carrier light and the excitation light, so that an intensity modulation at a high frequency equal to or greater than 100 MHz can be realized.

La présente invention concerne un amplificateur Raman permettant d'amplifier une lumière vecteur par utilisation du moyen d'amplification Raman, comprenant une source de lumière d'excitation (3) pour fournir une lumière d'excitation, qui a été modulée au plan de l'intensité par une haute fréquence égale ou supérieure à 100 MHz, sur le support d'amplification Raman ; un multiplexeur WDM (5) pour multiplexer et guider la lumière vecteur et la lumière d'excitation vers le moyen d'amplification Raman ; le moyen d'amplification Raman possède des caractéristiques de faible dispersion et montre une petite différence du temps de passage/propagation entre la lumière vecteur et la lumière d'excitation, de sorte que l'on puisse réaliser une modulation d'intensité à une fréquence élevée égale ou supérieure à 100 MHz.

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