Patent ID: 7742669
Filing Date: 2010-06-22
Classification: G02B,H01S

Abstract:
1. A cladding pumped optical fiber laser device comprising: a cladding pumped fiber laser; a plurality of optical sources for optically pumping the cladding pumped fiber laser; a plurality of multimode fibers optically coupling the optical sources to the cladding pumped fiber laser, each multimode fiber having a first end coupled to one of the plurality of optical sources and a second end coupled only to a cladding of the cladding pumped fiber laser for coupling multimode light into said cladding of the cladding pumped fiber laser; and a fiber having a multimode central core, said fiber being coupled to the cladding pumped fiber laser for coupling single mode light into a central core of the cladding pumped fiber laser, wherein the plurality of multimode fibers and the fiber having the multimode central core are bundled together into a fiber bundle, and the fiber bundle being tapered to a reduced cross sectional area prior to being coupled to the cladding pumped fiber laser.