Electro optic voltage sensor with optic fiber

Details Electro optic voltage sensor with optic fiber Electro optic voltage sensor with optic fiber

1997-04-09

1999-08-10

Karlsen, Ernest

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Using radiant energy

3242441, G01R 3100

Patent

active

059363959

ABSTRACT:
A voltage sensor comprises a helicoidal winding formed by an optic fiber having at least one zone sensitive or sensitized to an electrical field having a 2nd order non-linear electro optic effect. The sensitization process of the optic fiber can be achieved by a polarization process under an electric field. The voltage sensor preferably comprises a device enabling the electrical field lines to be homogenized in the region where the helical winding is located. The phase difference induced by the optic wave by electro optic effect caused by the electrical field and representative of the voltage to be measured, can be measured by polarimetric or interferometric detection.

REFERENCES:
patent: 3810013 (1974-05-01), Muller
patent: 4269483 (1981-05-01), Feldkeller
patent: 4516021 (1985-05-01), Taylor
patent: 4524322 (1985-06-01), Bobb
patent: 5053693 (1991-10-01), Bohnert et al.
patent: 5171981 (1992-12-01), Wood
IEEE Transactions on Power Delivery vol. 8, No. 4, Oct. 1993, "Development of an Optical Instrument Transformer for DC Voltage Measurement."

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