Optical waveguides – Accessories – External retainer/clamp
Patent
1990-09-28
1992-08-11
Gonzalez, Frank
Optical waveguides
Accessories
External retainer/clamp
385 31, 385 88, G02B 642
Patent
active
051386909
ABSTRACT:
A fiber identifer for detecting the presence or absence of an active data signal or a test signal in an optical fiber. The instrument includes a piston which positions a portion of the fiber under test against an optical detector, the piston being located within a housing, and the housing being attached to a drive rod. The rod is responsive to a levered actuation mechanism, but a damper controls the movement rate of the rod, and hence the piston, to slowly bend the fiber, minimizing disruption of any signal flowing through the fiber and preventing undue mechanical stress which could damage the fiber. A precision spring within the housing is used to limit the pressure applied by the piston against the optical fiber. The housing also includes a novel arrangement of electrical contacts to sense the position of the piston and, indirectly, the position of the rod.
REFERENCES:
patent: 4586783 (1986-05-01), Campbell et al.
patent: 4728169 (1988-03-01), Campbell et al.
patent: 4747652 (1988-05-01), Campbell et al.
patent: 4759605 (1988-07-01), Shen et al.
patent: 4790617 (1988-12-01), Campbell et al.
patent: 4824199 (1989-04-01), Uken
patent: 4834482 (1989-05-01), Campbell et al.
patent: 4961620 (1990-10-01), Uken et al.
patent: 4981334 (1991-01-01), Sniadower
LightWave, May 1990, Intelco's 401 fiber indentifier advertisement.
LightWave, Nov. 1989, Beale's fiber detector advertisement.
TE&M magazine, Jun. 15, 1989, Northern Telecom's "Identifiber II" advertisement.
Gonzalez Frank
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Musgrove Jack V.
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