A laser diode pump for fiber amplifiers, such as erbium-doped fiber
amplifiers (EDFAs), reduces spurious reflections in the signal frequencies
by providing a laser pump system that is dissipative at these signal
frequencies. Reflections from the pump system are reduced, or eliminated
by using an output facet that is currently coated to be reflective at pump
frequencies, but anti-reflective, or transmissive, at the signal
frequencies. In one embodiment, material layers of aluminum oxide
(Al.sub.2 O.sub.3), titanium dioxide (TiO.sub.2), and silicon dioxide
(SiO.sub.2) are used.