Movable probe carrying optical waveguides with electro-optic or

Details Movable probe carrying optical waveguides with electro-optic or Movable probe carrying optical waveguides with electro-optic or

1977-12-13

1979-04-03

Corcoran, Robert J.

Electricity: measuring and testing

Magnetic

Magnetometers

324 96, 350 9613, 350 9614, G01R 3302, G02B 514

Patent

active

041479793

ABSTRACT:
A probe for the non-contact measurement of electric or magnetic field strengths has two wave guides provided on a substrate. One of the wave guides has a measurement portion consisting of an electro-optical material or a magneto-optical material in a region of a measurement zone. A magnetic or electric field changes the index of refraction of the measuring portion and the intensity of a light wave traveling through this portion of the wave guide is reduced. Comparison is then made between a standard intensity in the other wave guide and a reduced intensity in the light traveling through the wave guide measuring portion.

REFERENCES:
patent: 3408131 (1968-10-01), Kapany
patent: 3605013 (1971-09-01), Yoshikawa
patent: 3662263 (1972-05-01), Bensel
patent: 3679974 (1972-07-01), Mollenbeck
patent: 3883220 (1975-05-01), Taylor
Hall et al., Observation of Propagation Cut Off etc., Applied Physics Letters, vol. 17, No. 3, Aug. 1970, pp. 127-129.

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