Chirped-pulse multiple wavelength communications system

H - Electricity – 04 – J

Patent

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Details

H04J 14/02 (2006.01) H04B 10/155 (2006.01) H04B 10/20 (2006.01) H04J 14/08 (2006.01) H04L 12/42 (2006.01)

Patent

CA 2183912

An apparatus and method provides optical multiple wavelength signals using a single optical broadband source to generate many independent optical wavelength channels. An optical transmitter includes a pulse chirping device which separates the frequency components of periodic optical pulses in the time domain forming separate wavelength channels which are separately modulated by a high-speed broadband optical modulator. A receiver includes a passive splitter to separate the individual wavelength channels. The chirped- pulse transmitter can then be conveniently adjusted to provide optimum overlap of wavelength channels with the modulating channel spectra.

L'invention est constituée par un appareil et une méthode qui produisent des signaux lumineux ayant plusieurs longueurs d'onde au moyen d'une unique source lumineuse à large bande pour créer une multiplicité de canaux optiques indépendants. Les émetteurs optiques du système de communication de l'invention utilisent un dispositif incorporé qui sépare les composantes fréquentielles des impulsions lumineuses périodiques dans le domaine temporel pour créer des canaux distincts qui sont modulés séparément par un modulateur optique rapide à large bande. Les récepteurs utilisent un diviseur passif incorporé pour séparer les canaux les uns des autres. Les émetteurs à modulation d'impulsions peuvent alors être ajustés pour optimiser le chevauchement des canaux par le spectre de modulation.

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