Optical amplification system for variable span length wdm...

Details Optical amplification system for variable span length wdm... Optical amplification system for variable span length wdm...

H - Electricity

01

S

H01S 3/00 (2006.01)

Patent

CA 2593040

An optical communications system includes a plurality of optical fiber spans. An optical loss of one of the plurality of optical fiber spans is different from an optical loss of another one of the plurality of optical fiber spans. At least one of the plurality of optical fiber spans includes an optical loss that is greater than or equal to 35dB and at least one of the plurality of optical fiber spans includes an optical loss that is less than 30dB. An optical amplification system includes at least one discrete optical amplifier, at least one distributed optical amplifier, and an optical loss element. The optical amplification system has spectral gain that compensates for substantially all losses experienced by the optical signals propagating in the plurality of optical fiber spans.

L'invention concerne un système de télécommunication par fibre optique qui comprend une pluralité de tronçons de fibre optique. La perte optique de l'un des tronçons de fibre optique est différente de celle d'un autre des tronçons de fibre optique. Au moins un tronçon de la pluralité des tronçons de fibre optique comprend une perte optique supérieure ou égale à 35 dB, et au moins un de la pluralité des tronçons de fibre optique comprend une perte optique inférieure à 30 dB. Le système d'amplification optique comprend au moins un amplificateur optique distinct, au moins un amplificateur optique réparti et un élément de perte optique. Le système d'amplification optique comporte un gain spectral qui compense pratiquement toutes les pertes subies par les signaux optiques propagés dans la pluralité des tronçons de fibre optique.

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