Five-axis optical fiber gradiometer

Details Five-axis optical fiber gradiometer Five-axis optical fiber gradiometer

1985-07-02

1987-02-17

Nelms, David C.

Electricity: measuring and testing

Magnetic

Magnetometers

324 96, 250227, 250231R, G01R 3302

Patent

active

046442731

ABSTRACT:
A magnetic field gradiometer includes a geometric arrangement of fiber op sensors through which light from a single frequency laser is transmitted. Having a pair of single-mode optical fibers, each of which are coupled to a magnetostrictive element, each sensor is formed in the manner of a Mach-Zehnder interferometer which is oriented to detect the spatial variation in a particular orthogonal component of the magnetic field by phase comparison of the light transmitted through its respective pair of fibers.

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patent: 4495467 (1985-01-01), Kuno et al.
patent: 4523147 (1985-06-01), D'Angelo et al.
patent: 4587487 (1986-05-01), Zanzucchi
patent: 4591786 (1986-05-01), Koo et al.

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