Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1989-04-13
1991-04-30
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356 731, H01J 516, G01N 2100
Patent
active
050120875
ABSTRACT:
A system for detecting energy leakage from an optical fiber transmitting high power laser beams. A second optical fiber is placed together with the laser power transmitting fiber into a jacketing tube or conduit. The second fiber is connected at one end to a light source and at the other end to a photosensitive diode. Leakage of laser energy from the power transmitting fiber will cause a failure of the second optical fiber, reducing or terminating the transmission of light to the photosensitive diode. Energy leakage from the laser power transmitting fiber can therefore be detected by monitoring the output of the photosensitive diode.
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Mannava Seetharamaiah
Rockstroh Todd J.
General Electric Company
Messinger Michael
Moore, Jr. Charles L.
Nelms David C.
Squillaro Jerome C.
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