Fiber optic magnetic field sensor

Details Fiber optic magnetic field sensor Fiber optic magnetic field sensor

1983-04-28

1985-11-19

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

324 96, 350 9613, G02B 514

Patent

active

045544492

ABSTRACT:
A fiber optic magnetic field sensor employing Faraday effect. The sensor has two pieces of birefringent substance interposed between the ends of optical fibers and a rod lens for effecting polarization separation. In addition, the sensor employs a reflex optical system in which light reciprocates through a Faraday material. Thereby, a magnetic field sensor has been realized which is more compact and lightweight and lower in cost as well as more accurate.

REFERENCES:
patent: 3679974 (1972-07-01), Mollenbeck
patent: 4221460 (1980-09-01), Hepner et al.
patent: 4356448 (1982-10-01), Brogardh et al.
patent: 4375910 (1983-03-01), Seki

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