Patent ID: 6900933

Claim:
An integrated optical fiber amplifier system comprising: a non-reciprocal combination-device having a principal direction and a reverse principal direction including a first birefringent wedge having a first optical axis perpendicular to the principal direction, adapted to receive light from at least two pump light sources, a second birefringent wedge having a second optical axis perpendicular to the principal direction, the second optical axis forming a first angle with respect to the first optical axis, adapted to deliver a combined pump light in the principal direction, and a non-reciprocal rotating element optically coupled between the first and the second birefringent wedge and adapted to rotate a polarization of light passing therethrough by a second angle; and an optical fiber amplifier optically coupled to the first birefringent wedge for receiving a combined pump light from the non-reciprocal combination-device in the reverse principal direction, the first birefringent wedge, the second birefringent wedge and the non-reciprocal rotating element being adapted to receive a signal light supplied to the second birefringent wedge in a reverse principal direction and deliver the signal light in a reverse principal direction to an optical fiber.