Device for coupling and decoupling optical signals of two transm

Details Device for coupling and decoupling optical signals of two transm Device for coupling and decoupling optical signals of two transm

1997-12-08

2000-01-11

Ngo, Hung N.

Optical waveguides

With optical coupler

Plural

G02B 626

Patent

active

060144815

ABSTRACT:
The device for coupling and decoupling signals of two transmission channels has an optical amplifier and a first optical coupler connected upstream in a transmission direction from the amplifier and a second optical coupler connected downstream from the amplifier. The first coupler (K1) decouples signals of a first transmission channel fed to the amplifier. The second coupler (K2) couples signals of another transmission channel (m) (n) together with signals in a second transmission channel (o) into it from the amplifier. The device is suitable as an add/drop multiplexer and couples and decouples transmission channels using only one optical amplifier for each transmission direction.

REFERENCES:
patent: 5132976 (1992-07-01), Chung et al.
patent: 5181210 (1993-01-01), Chung et al.
patent: 5699371 (1997-12-01), Handa et al.

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