Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1995-02-14
1996-10-22
Allen, Stephone
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356 7310, 25022716, 25022727, 385 13, G01J 104, G01B 910
Patent
active
055679331
ABSTRACT:
The invention is an optical fiber detection system which includes a light source, a pair of optical couplers, an optical fiber loop and two photodetectors connected to the fiber loop. The optical couplers direct the light about the fiber loop such that one of the detectors detects the occurrence of disturbances in the fiber loop, and the other positively detects the occurrence of breaks.
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Crawford Brian B.
Robinson Jeffrey C.
Allen Stephone
Mason & Hanger National, Inc.
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