Optical voltage electric field sensor

Details Optical voltage electric field sensor Optical voltage electric field sensor

1993-08-26

1995-08-29

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Using radiant energy

324753, 3242441, 2502311, G01D 534

Patent

active

054463815

ABSTRACT:
An optical voltage electric field sensor of the type which includes a light source, a polarizer for linearly polarizing an incident light beam emanated from the light source, a phase plate for applying a phase difference to the linearly polarized light beam, a Pockels element for modulating the linearly polarized light beam applied with the phase difference in accordance with a voltage or electric filed applied thereto, an analyzer for separating the modulated light beam into a S-polarized light beam and a P-polarized light beam, a first light-receiving element arranged to receive the S-polarized light beam for converting the S-polarized light beam into a first electric signal V.sub.1 indicative of the intensity of the light beam, and a second light-receiving element arranged to receive the P-polarized light beam for converting the P-polarized light beam into a second electric signal indicative of the intensity of the light beam. The sensor further includes a first calculation circuit for calculating an equation

REFERENCES:
patent: 4973899 (1990-11-01), Jones et al.
patent: 5153427 (1992-10-01), Takahashi

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