Patent ID: 7043101

Claim:
A pump module for optical amplification of a light signal on a fiber-optic cable in a fiber-optic network, the pump module comprising: an active component part comprising at least a first laser diode and a second laser diode disposed on a substrate, wherein the first laser diode outputs a first pumping beam and the second laser diode outputs a second pumping beam; and a combiner disposed on the substrate and optically coupled to the active component part, wherein the combiner combines the first pumping beam and the second pumping beam into an output beam and wherein the combiner isolates the first laser diode and the second laser diode from back reflections, the combiner further comprising: a first wedge; a Faraday rotator optically coupled to the first wedge, the Faraday rotator comprising one of a: latching magnetic material; and, a non-latching magnetic material; and a second wedge optically coupled to the Faraday rotator.