Optical coupler comprising multimode fibers and method of making the same
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United States of America Patent
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May 16, 2006
Grant Date -
May 5, 2005
app pub date -
Oct 29, 2003
filing date -
Oct 29, 2003
priority date (Note) -
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Abstract
An optical coupler is provided. It has a bundle of multimode fibers with a few-mode fiber in its centre. Such bundle is fused at one end which is the output end for the signal that is transmitted by the few-mode fiber. To make the coupler, this output end of the bundle is aligned and spliced with a large area core double clad fiber while preserving the modal content of the feed-through. A method for making such optical coupler is also provided. It includes the steps of bundling a central few-mode fiber with a plurality of multimode fibers and then fusing one end of such bundle and aligning it and splicing with a large core double clad fiber, while preserving fundamental mode transmission from one to the other.
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