Pressure wave fiber optic transducer cable

Details Pressure wave fiber optic transducer cable Pressure wave fiber optic transducer cable

1983-07-25

1985-06-18

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367154, 455612, G02B 514, G01H 900, G01S 380

Patent

active

045244367

ABSTRACT:
A distributed microbending sensor cable is described comprising a core structure having discontinuities or ridges on its surface which ridges extend longitudinally of the core. An optical fiber is wrapped helically about the core in contact with the ridges with the adjacent contact points in one embodiment being a distance apart which is the distortion wave length of the selected optical fiber.
In a modification of the sensor cable the distance .LAMBDA. between adjacent contact points is varied along the length of the sensor to impart a weighted characteristic to the sensor response.

REFERENCES:
patent: 2872532 (1955-08-01), Birchman et al.
patent: 4294513 (1981-10-01), Nelson et al.
patent: 4408495 (1983-10-01), Couch et al.
patent: 4408829 (1983-10-01), Fitzgerald et al.
patent: 4443700 (1984-04-01), Macedo et al.
patent: 4449210 (1984-05-01), Myer

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