Optical transmission system

Details Optical transmission system Optical transmission system

H - Electricity

04

B

H04B 10/17 (2006.01) H04B 10/12 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2373912

An optical transmission system is provided in which a plurality of Raman amplifiers are combined so that the wavelength band of a first Raman amplifier in the form of an upward convex curve including the maximum gain value and the wavelength band of a second Raman amplifier in the form of a downward convex curve including the minimum gain value overlap with each other, and that the wavelength band of the first Raman amplifier in the form of a downward convex curve including the minimum gain value and the wavelength band of the second Raman amplifier in the form of an upward convex curve including the maximum gain value overlap with each other. This arrangement also applies to cases where three or more amplifiers are used. Due to this arrangement, an optical transmission system is realized in which it is possible to attain a reduction in Raman gain flatness without using any means such as an equalizer.

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