Triaxial optical fiber system for measuring magnetic fields

Details Triaxial optical fiber system for measuring magnetic fields Triaxial optical fiber system for measuring magnetic fields

1981-10-05

1984-05-22

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetometers

250227, 324244, 350 961, 350376, G01R 33032, G02F 109, G02B 5172

Patent

active

044504063

ABSTRACT:
An optical system is disclosed wherein light is transmitted through fibertic members orthogonally configured in a triaxial arrangement for measuring the magnetic field vector preset in the environment. In one preferred embodiment, a set of three fiber-optic coils positioned coaxially along respective orthogonal axes and having predetermined lengths and diameters are coupled to a source of polarized light for transmitting the light subject to Faraday rotation of its plane of polarization. In another preferred embodiment, light, not necessarily polarized. is transmitted along respective orthogonal axes through a set of three bifurcated fiber-optic cables each formed having a reference branch and a substantially equilaterally sensor branch on which a magnetostrictive material is intimately connected to produce optical path length changes related to the magnetic field component along the respective axes. Photodetectors are used in both embodiments to produce current signals indicative of characteristic changes in the transmitted light, and the current signals are digitally processed to provide magnitude and directional information regarding the magnetic field vector.

REFERENCES:
patent: 2485931 (1949-10-01), Slonczewski
patent: 3605013 (1971-09-01), Yoshikawa et al.
patent: 3936742 (1976-02-01), Krause
patent: 4070620 (1978-01-01), Feldtkeller et al.
patent: 4070622 (1978-01-01), Harms et al.
patent: 4229697 (1980-10-01), Petrosky et al.
patent: 4371838 (1983-02-01), Griscom
patent: 4376248 (1983-03-01), Giallorenzi et al.

Affiliated with

Also associated with

Rating

Triaxial optical fiber system for measuring magnetic fields does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Triaxial optical fiber system for measuring magnetic fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Triaxial optical fiber system for measuring magnetic fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1480572