An optical fiber amplifier module is disclosed which comprises a signal path
located
between a signal input and a signal output. A WDM coupler and an amplifying gain
medium are disposed along the signal path. A pump laser is disposed out of the
signal path in a manner that allows a pump signal from the pump laser to reflect
off the WDM coupler and enter the signal path. An embodiment utilizing a second
WDM coupler and a second pump laser is also disclosed.