Optical fiber waveguide for measuring magnetic fields

Details Optical fiber waveguide for measuring magnetic fields Optical fiber waveguide for measuring magnetic fields

1980-09-24

1983-02-01

Gensler, Paul L.

Electricity: measuring and testing

Magnetic

Magnetometers

324260, 343703, 350 9634, G01R 3300

Patent

active

043718388

ABSTRACT:
An optical fiber waveguide for detecting magnetic fields. The optical fiber waveguide includes therein an array of discrete elongate magnetized particles, all polarized in the same direction with their axes generally parallel with the longitudinal axis of the waveguide, which in the presence of a time-varying magnetic field are subjected to magnetostrictive effects and undergo linear dimension changes to cause a related longitudinal dimension change of the optical fiber waveguide whereby a laser beam passing longitudinally through the waveguide is subject to phase shifts detectable by interferometry.

REFERENCES:
patent: 4040890 (1977-08-01), Burrus, Jr. et al.
Yariv et al. Proposal for Defection of Magnetic Fields Through Magnetostrive Perturbation of Optical Fibers, Optics Letters, Mar. 1980, pp. 87-89.

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