Optical fiber interferometer

Details Optical fiber interferometer Optical fiber interferometer

1987-01-14

1987-11-03

Buczinski, Stephen C.

Electricity: measuring and testing

Magnetic

Magnetometers

324260, 324 96, 324 72, 250231R, G01R 3302, G01D 534

Patent

active

H00003719

ABSTRACT:
A sensor system is disclosed for measuring small physical perturbations in he environment using an optical fiber interferometer in the Fabry-Perot configuration operating at maximum sensitivity. A single frequency laser source is focused on one end of a single mode optical fiber with highly polished, highly reflective flat ends. An element responsive to the ambient magnetic or electric field alters the fiber's optical path length, thereby affecting the intensity of light transmitted through the fiber. A detection and feedback system detects the transmitted light and readjusts the optical path length to one which corresponds to maximum sensitivity.

REFERENCES:
patent: 3308394 (1967-03-01), Snitzer et al.
patent: 4162397 (1979-07-01), Bucaro et al.
patent: 4319186 (1982-03-01), Kingsley
patent: 4329058 (1982-05-01), James et al.
patent: 4360272 (1982-11-01), Schmadel et al.
patent: 4368981 (1983-01-01), Ozeki

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