Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2011-04-26
2011-04-26
Healy, Brian M (Department: 2883)
Optical waveguides
With optical coupler
Particular coupling structure
C385S115000, C385S095000, C385S123000, C385S126000
Reexamination Certificate
active
07933479
ABSTRACT:
A multimode fiber coupler has a structure in which a plurality of tapered pump fibers are coupled laterally to a multi-clad fiber, such as a double clad fiber (DCF). Such coupler is produced by first forming a plurality of tapered pump fibers and positioning them around the multi-clad fiber, thus forming a fiber bundle. Then, the fiber bundle is twisted and fused so that the input pump fibers converge towards a waist and then diverge from it. The diverging portions of the pump fibers may be removed from the structure. Also, at the waist, the structure may be cleaved and the portion with the converging pump fibers is then spliced with a multi-clad fiber which is similar or identical to the one in the middle of the bundle.
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Garneau Marc
Gonthier François
Vachon Nelson
Brouillette Robert
Brouillette & Partners
Cartier Francois
Healy Brian M
ITF Laboratories Inc.
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