High spectral efficiency, high performance optical mux and...

H - Electricity – 04 – J

Patent

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Details

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

Patent

CA 2443409

The present invention discloses a high performance optical architecture for multiplexing and demultiplexing channels for use in high spectral efficiency optical systems. In general, the MUX and DeMUX architectures of the present invention will fall into two key sections or stages: a wavelength group section and a channel section. The group section makes use of characteristic associated with groups of multiplexed channels for separating said groups from an optical signal having a plurality of multiplexed groups. Advantageously, in preferred embodiments, the channel section is colorless (non-wavelength specific between groups) in order to reduce cost and complexity. With respect to the colorless channel section, components with free spectral ranges (FSRs) have been strategically added to provide repetitive optical filtering functions on group of channels (i.e. , subsets of channels within each band of wavelengths) so that the colorless channel section can operate in any respective group identically. Hence each of said colorless channel sections are interchangeable. Advantageously Distortion compensation can be performed on a per group basis.

L'invention concerne une architecture optique haute performance pour le multiplexage/démultiplexage de canaux dans des systèmes optiques à haute efficacité spectrale. En règle générale, les architectures rentrent dans deux catégories principales: groupes de longueur d'onde, et canaux. Dans le premier cas, on utilise une caractéristique associée à des groupes de canaux multiplexés, pour la séparation de ces groupes par rapport à un signal optique de plusieurs groupes de multiplexage. En modes de réalisation préférés, la catégorie canaux est avantageuse car interchangeable (sans spécificité de longueur d'onde entre groupes), ce qui permet de réduire les coûts et la complexité, et on ajoute des gammes spectrales libres judicieusement choisies pour assurer les fonctions de filtrage optique répétitif sur des groupes de canaux (à savoir, sous-ensembles de canaux dans chaque bande de longueurs d'onde), de sorte que la catégorie canaux interchangeable fonctionne de la même manière dans chaque groupe. Chaque catégorie canaux est donc interchangeable. Il est intéressant de noter que la compensation de distorsion peut s'effectuer par groupe.

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