Coupled multiple output fiber laser
AssigneeUnited Technologies Corporation
InventorGary A. Ball
Life of this patent
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AssigneeUnited Technologies Corporation
InventorGary A. Ball
Estimating the term…
A coupled multiple output fiber laser includes a plurality of laser diodes 10,50-56 each providing pump light 12,58-64 which is incident on respective Bragg gratings 16,74-80 which pass the pump wavelength and reflect a lasing wavelength. The fibers 20,90-96 are doped with a gain dopant such as Er.sup.3+ to provide lasing at the lasing wavelength in response to the pump light. Light beams 18,82-88 are incident on an optical coupler 22 which couples the light beams 18,82-88 to the light beams 40-48 on the fibers 30-38 based on a predetermined power distribution, e.g., equal distribution. The light 40 travels along the fiber 30 which acts as a common-cavity fiber. The light 40 reflects off a reflector 120 which provides reflected feedback light 122 which reenters the coupler 22 and is distributed to the individual cavity fibers 20,82-88 based on the same or a different predetermined power distribution. Output light 42-48 is provided on the fibers 32-38 which may be incident on a lens 160 to cause the beams to intersect. The length of each of the fibers 20,90-96 is adjusted by piezoelectric tuners 200-208 to provide coupled cavity phase-locking of the output beams 42-48. Also, each of the output beams 42-48 may be phase shifted by additional tuners 240-246. An additional output beam may be obtained by a light 232 which passes through the mirror 120.
A coupled multiple output fiber laser, comprising:
A coupled multiple output fiber laser, comprising:
Dependencies are inferred from the claim text.