Patent ID: 7130113
Filing Date: 2006-10-31
Classification: G02B,H01S

Abstract:
1. A system for passive phasing of fiber amplifiers, comprising: an array of fiber amplifiers including a plurality of fiber amplifiers, the array of fiber amplifiers emitting a beam; and an optical device placed at a far-field of the array of fiber amplifiers, wherein the optical device couples a first portion of the emitted beam back into the array of fiber amplifiers through a coupling hole, and wherein only the first portion of the emitted beam propagates through the coupling hole, wherein the optical device is placed around a central lobe on an optical axis of the array of fiber amplifiers, wherein the optical device is a collimating mirror, and wherein the array of fiber amplifiers are configured as a ring with a transmitting end and a receiving end of the array of fiber amplifiers being positioned toward each other to form the ring.