Variable optical attenuator for optical fiber coupling
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United States of America Patent
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-
Feb 24, 1987
Grant Date -
N/A
app pub date -
Dec 11, 1984
filing date -
Dec 16, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The variable optical attenuator varies the angle and distance of coupling between two fiber ends by moving the end of one of the fibers along a circular arc passing through the end of the other fiber. It comprises a rectangular block 3 to support said fibers 1 and 2, having a slit 6 through its end, running parallel to its broad surfaces and dividing the block into two branches 7, 8, a cylindrical through hole 9 traversing one of the branches 7 substantially in line with the inside end of the slit and opened on the side of the supporting surface 4 of the block to establish the coupling zone between the fibers afixed to said surface, and driving and control means 20, 25 for swivelling the branch 7 carrying one of the fibers, which means act substantially on the free end of said branch 7.
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