Accession Number : ADD012797

Title :   Five-Axis Optical Fiber Gradiometer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bobb,Lloyd C

Report Date : 17 Feb 1987

Pagination or Media Count : 5

Abstract : A magnetic field gradiometer includes a geometric arrangement of fiber optic 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. (Patents)

Descriptors :   *PATENTS, *FIBER OPTICS, *GRADIOMETERS, MAGNETIC FIELDS, ORTHOGONALITY, FREQUENCY, LASERS, SPATIAL DISTRIBUTION, VARIATIONS, MAGNETOSTRICTION, FIBERS, COMPARISON, FIBER OPTICS

Subject Categories : Magnetic & Electric Fld Detection & Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE