Optical transmission system having noise-elimination function

Details Optical transmission system having noise-elimination function Optical transmission system having noise-elimination function

2004-07-30

2009-02-10

Leung, Christina Y (Department: 2613)

Optical communications

Optical repeater system

Monitoring

C398S038000

Reexamination Certificate

active

07489876

ABSTRACT:
The present invention is aimed at providing a low-cost optical transmission system of simple configuration, capable of achieving a satisfactory OSNR even in the time of transmission of a small number of wavelengths. To this end, the optical transmission system is provided with a noise elimination unit corresponding to each of optical amplifiers arranged on a transmission path. This noise elimination unit includes a transmission characteristic capable of selectively transmitting a light in a wavelength band in which a signal light exists through an amplification band of the optical amplifier, and includes a function of automatically eliminating a noise light in a wavelength band in which a signal light does not exist, of noise lights generated in the optical amplifiers.

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