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ABSTRACT: On the basis of the Kerr electrooptic effect, a highly sensitive
measurement method, which could be used for measuring two-dimensional
electric field distributions in liquid dielectrics, is proposed. By
applying a pulse voltage to an optical phase modulator, the authors
changed the incident light from a linearly polarized light into two
elliptically polarized components. Modulating both states of
polarization of these two components as well as the DC electric field
with an AC electric field, they determined the amplitudes and directions
of both the AC and DC electric field intensity in liquids with small
Kerr constants (~10<sup>-15</sup> m/V<sup>2</sup>). The proposed method
is automatic and has a sensitivity ≈100 V/cm. The two-dimensional
electric field distributions in tricresyl phosphate liquid dielectric
are measured with this method
IEEE Transactions on Electrical Insulation 05/1992;
