Patent ID: 6014481
Filing Date: 2000-01-11
Classification: H04B

Abstract:
A device for coupling and decoupling optical signals, said device comprising an optical amplifier and two optical couplers, one of said couplers being connected to said amplifier upstream of said amplifier in a transmission direction and another of said couplers being connected to said amplifier downstream of said amplifier to receive input from said amplifier, wherein said optical amplifier comprises means for amplifying signals of at least two transmission channels having different wavelength ranges,wherein the one of said optical couplers arranged upstream of said optical amplifier in said transmission direction consists of means for coupling signals of a first one of said at least two transmission channels together with signals of a second one of said at least two transmission channels into said optical amplifier andwherein said another of said two optical couplers arranged downstream of said optical amplifier has an outlet branch and consists of means for decoupling signals of another transmission channel from said optical amplifier, said signals in said another transmission channel from said optical amplifier having been supplied in one of said at least two transmission channels to said optical amplifier.