Optical current transformer

Details Optical current transformer Optical current transformer

1991-09-27

1994-04-19

Nguyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Using radiant energy

324117R, G01R 3100

Patent

active

053049209

ABSTRACT:
In an optical current transformer in which the Faraday rotation of light in a waveguide (2) enclosing the current is measured, the waveguide (2) is designed as an integrated-optics single-mode waveguide embedded in a substrate (1).
Further elements of the measuring device, such as polarizers (13), mirrors (11) and Y couplers (12, 14), may likewise advantageously be integrated into the substrate (1).
The integration leads to a sensor element (SE) which can be produced in a simple manner and is to a large extent insensitive to environmental influences such as temperature fluctuations and vibrations.

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