Pressure sensor utilizing microbending of a fiber optic cable wo

Details Pressure sensor utilizing microbending of a fiber optic cable wo Pressure sensor utilizing microbending of a fiber optic cable wo

1991-09-27

1993-03-09

Ullah, Akm E.

Optical waveguides

Optical waveguide sensor

Including physical deformation or movement of waveguide

25022714, G02B 600, G02B 636

Patent

active

051931290

ABSTRACT:
A pressure detector including a fiber optical cable woven through a ladder-like structure which is then encapsulated and surrounded by a cover. Light transmitted through the fiber optic cable is diminished to a value less than a threshold value upon the occurrence of microbending caused by pressure applied at any location along the length thereof. The rungs of the ladder-like structure are sized and spaced to provide a proper locus about which microbending may be produced. In addition, the rungs may be round in cross-section and/or otherwise shaped to enhance the sensitivity of the system.

REFERENCES:
patent: 4421979 (1983-12-01), Asawa et al.
patent: 4537469 (1985-08-01), Kircher
patent: 4701614 (1987-10-01), Jaeger et al.
patent: 4725124 (1988-02-01), Taylor
patent: 4927232 (1990-05-01), Griffiths
patent: 5056884 (1991-10-01), Quinlan, Jr.

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