Fiber curvature measurement fixture

Details Fiber curvature measurement fixture Fiber curvature measurement fixture

1998-08-31

2000-04-18

Sanghavi, Hemang

Optical waveguides

Accessories

External retainer/clamp

385134, 385137, 385 97, 264 125, G02B 600

Patent

active

060525053

ABSTRACT:
A fixture for use in a fiber curl measurement assembly has a fiber guide plate upon which are disposed a pair of fiber locating and centering rods which form a V-groove for containing the fiber, which is free to rotate within the groove. A reference plate having a transverse reference edge in space from the downstream end of the V-groove a distance sufficient for fiber curvature to be measured during rotation. A rotating stage under control of a motor has a rotatable plate upon which rests, and is held, a fiber clip for containing the fiber to be measured. The rotating stage is oriented at a vertical angle to the plane of the rods and V-groove, and the fiber is threaded through a bearing block into the V-groove. The bend thus created in the fiber is such that a downward force is created on the fiber to hold it within the V-groove. Thus, where the rotating stage is rotated by the motor, the fiber within the groove is rotated so that curl measurements may be made. The diameter of each of the rods is such that the fiber is cammed into the V-groove during the threading operation.

REFERENCES:
patent: 4379771 (1983-04-01), Snyder
patent: 4623156 (1986-11-01), Moisson et al.
patent: 5182789 (1993-01-01), Nash-Stevenson et al.
patent: 5917595 (1999-06-01), Norland et al.

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