Fiber-optical measuring apparatus

Details Fiber-optical measuring apparatus Fiber-optical measuring apparatus

1982-09-13

1985-07-16

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250231R, 324 96, G02B 514

Patent

active

045298750

ABSTRACT:
A fiber-optical measuring apparatus for measuring magnetic fields, current, position, and various mechanical quantities consists of a transducer connected to a measuring electronic unit via at least one optical fiber, and the transducer comprises a magneto-optical modulator with a domain-producing magnetic material. The transducer is provided with at least two optical filters, of which at least one filter is positioned in the ray path on one side of the magneto-optical modulator and at least one other filter is positioned in the ray path on the opposite side of the modulator.

REFERENCES:
patent: 3502978 (1970-03-01), Bernard
patent: 4249076 (1981-02-01), Bergstrom
patent: 4255018 (1981-03-01), Ulrich
patent: 4275296 (1981-06-01), Adolfsson
patent: 4309084 (1982-01-01), Hill

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