Bi-directional optical-amplifier module

摘要

The invention refers to a bi-directional optical-amplifier module comprising:a first optical amplifier;a second optical amplifier;a third optical amplifier;a fourth optical amplifier;a mid-stage device for performing a desired signal processing for an upward and/ or downward optical signal passing therethrough;a first optical-signal-path-setting device being connected to a first input/output terminal of the bi-directional optical-amplifier module and to the fourth optical amplifier,a second optical-signal-path-setting device being connected to a second input/output terminal of the bi-directional optical-amplifier module and to the third optical amplifier,a third optical-signal-path-setting device being connected to the first optical amplifier and to a first terminal of the mid-stage device,a fourth optical-signal-path-setting device being connected to the second optical amplifier and to a second terminal of the mid-stage device.