Method of making fiber optic couplers
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United States of America Patent
Stats
-
Dec 25, 1990
Grant Date -
N/A
app pub date -
Jul 17, 1989
filing date -
Jul 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fiber optic coupler is formed by providing a glass tube having a longitudinal extending aperture. Protective coating is removed from a region of a first optical fiber intermediate the end. Protective coating is removed from an end region of at least one other optical fiber. The coated portion of the first fiber is threaded through the tube until the uncoated region is near the tube end. The uncoated region of the second fiber is placed adjacent that of the first fiber, and both uncoated regions are simultaneously fed into the tube aperture. The threading operation is continued until the uncoated regions extend through the midregion of the tube, the midregion is heated to collapse it about the fibers, and the central portion of the midregion is drawn to reduce the diameter along a predetermined length.
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