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The present paper proposes an optical device for measuring low-frequency (50-60 Hz) high electric fields (0-200 kV.cm-1) using a LiNbO3 crystal as sensing medium without any contacting electrode. Thus, a good galvanic insulation of material and person is obtained. An experimental setup is developed in the laboratory by using the electro-optical effect or Pockels effect, and several measurements are realized. Simulations are performed with the finite element method (FEM) to optimize the sensing medium of the device. Experimental and simulation results are presented and discussed. The sensor induces a weak disturbance of the local electric field to be measured. The sensibility of the sensor is about 4 μA/(kV.cm-1 )
Published in:
Instrumentation and Measurement, IEEE Transactions on
(Volume:50
,
Issue:
5
)
Date of Publication: Oct 2001
- Page(s):
- 1053 - 1058
- ISSN :
- 0018-9456
- INSPEC Accession Number:
- 7164880
- Digital Object Identifier :
- 10.1109/19.963157
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 07 August 2002
- Issue Date :
- Oct 2001
- Sponsored by :
- IEEE Instrumentation and Measurement Society
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