Optical wavelength-division multiplex transmission system...

Details Optical wavelength-division multiplex transmission system... Optical wavelength-division multiplex transmission system...

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H04B 10/00 (2006.01) H04J 99/00 (2009.01) H04B 10/17 (2006.01) H04J 14/02 (2006.01)

Patent

CA 1279413

6446-431 ABSTRACT A wavelength-division multiplex transmission system includes an optical multiplexer for multiplexing optical signals having different wavelengths into a wavelength-division multi- plexed optical signal. Also included are optical amplifiers for amplifying, as a whole, the wavelength-division multiplexed opti- cal signal supplied from the optical multiplexer, and an optical filter for suppressing undesired spectra of an output optical signal supplied from the optical amplifiers. The system removes spontaneous emission noise produced in the amplifiers.

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