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.