Optical fibre transmission system using rz pulses

Details Optical fibre transmission system using rz pulses Optical fibre transmission system using rz pulses

H - Electricity

04

B

H04B 10/18 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2388316

The invention concerns a transmission system, in particular ground-based, by optical fibre with RZ pulses comprising transmitting means, receiving means, the transmitting and receiving means using wavelength multiplexing, the transmission line comprising a plurality of main optical fibre sections having a dispersion of a given type between which are interposed dispersion--compensating means. The compensation of the dispersion operated by said means is such that the width of the spectrum of the pulses in output of said means is constant over the transmission line. The RZ pulses are of a duration ranging between 40 and 80 ps. The different channels have a rate of the order of 10 G/bits or more. Their frequency spacing is of the order of 25 GHz or less.

Système de transmission, notamment terrestre, par fibre optique à impulsions RZ comportant des moyens d'émission, des moyens de réception et une ligne de transmission qui s'étend entre lesdits moyens d'émission et de réception, les moyens d'émission et de réception mettant en oeuvre un multiplexage en longueur d'onde, la ligne de transmission comportant une pluralité de sections de fibre optique principales présentant une dispersion d'un type donné entre lesquelles sont interposés des moyens de compensation de dispersion. La compensation de dispersion que réalisent lesdits moyens est telle que la largeur du spectre des impulsions en sortie desdits moyens est constante sur la longueur de la ligne de transmission. Les impulsions RZ sont d'une durée de l'ordre de 40 à 80 ps. Les différents canaux ont un débit de l'ordre de 10 Gbit/s ou supérieur. Leur espacement est de 25GHz ou inférieur.

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