Temperature-compensated electro-optical voltage sensor

Details Temperature-compensated electro-optical voltage sensor Temperature-compensated electro-optical voltage sensor

2005-04-26

2005-04-26

Zarneke, David (Department: 2829)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Using radiant energy

C324S072500

Reexamination Certificate

active

06885182

ABSTRACT:
The electra-optical voltage sensor has an electra-optically active medium and a distance medium between two electrodes, between which the voltage V to be measured is present. The media and the thicknesses d1, d2of the media are chosen in such a way that the measured voltage signal has no temperature dependence. By way of example, the thicknesses d1, d2are chosen in such a way that the influence of the temperature dependences of critical electra-optical coefficients and dielectric constants of the media on the voltage signal cancel one another out. The two media are advantageously arranged in the form of a rod, comprising an alternating arrangement of cylindrical elements of the two media, between the electrodes. BGO and fused silica may advantageously be used as media. The sensor is preferably cast in silicone. It is possible to realize a mechanically stable, temperature-stabilized voltage sensor with low reflection losses, a large half wave voltage and a small sensitivity toward disturbances of the electric field.

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