Optical device for sensing magnetic inductions

Details Optical device for sensing magnetic inductions Optical device for sensing magnetic inductions

1991-03-05

1992-06-02

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Magnetometers

324260, 356345, 25022711, G01R 3302, G01B 902, H01J 516, H01J 4014

Patent

active

051190249

ABSTRACT:
A device for measuring a magnetic induction comprises an evaluation device including a source for emitting light and a receiver for receiving light. A resonator is located in the light path between the source and the receiver and comprises first and second parallel mirrors and a gaseous medium occupying the space between the two mirrors. A converter is coupled to one of the mirrors for shifting one of said mirrors along an optical axis of the resonator so that the optical length of the resonator varies in response to the induction to be measured.

REFERENCES:
patent: 4522495 (1985-06-01), Shajenko
patent: 4533247 (1985-08-01), Epworth
"Silicon as a Mechanical Material", by K. E. Petersen in Proceeding of the IEEE, vol. 70, No. 5, pp. 420-457 (1982).

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