Pressurized optical cable equipped to detect and locate pressure

Details Pressurized optical cable equipped to detect and locate pressure Pressurized optical cable equipped to detect and locate pressure

1985-03-22

1988-10-18

Sikes, William L.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

350 9610, 350 9623, 250227, 356 731, G02B 602, G02B 600, H01J 516, G01N 2100

Patent

active

047782480

ABSTRACT:
A pressurized optical cable equipped for the detection and location of losses of pressure that might affect it is equipped with a source for creating a light signal and injecting it into one of the extremities of an optical fiber of the cable, with pressure detectors situated at intervals along the cable, with modifiers associated with the detectors, which, in response to a reaction of the detector modify, at the point of the detection, the intensity of a light propagating in the optical fiber, and with an echometer for generating, at the extremity of the fiber, a representation of a light signal backscattered by this fiber when the injected signal propagates therein, for the purpose of detecting and locating a loss of pressure in the cable by detecting and identifying singularities in the representation, resulting from the action of the modifiers.

REFERENCES:
patent: 4270049 (1981-05-01), Tanaka et al.
patent: 4294513 (1981-10-01), Nelson et al.
patent: 4408829 (1983-10-01), Fitzgerald, Jr. et al.
patent: 4463254 (1984-07-01), Asawa et al.
patent: 4482890 (1984-11-01), Forbes et al.
patent: 4493995 (1985-01-01), Adolfsson et al.

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