Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Patent
1990-12-21
1992-10-20
Nguyen, Vinh
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Using radiant energy
324158R, 359251, 356368, G01R 3100, G01R 2900
Patent
active
051573245
ABSTRACT:
A Pockels effect electric field sensor includes, as a sensitive element, a crystal with electro-optic properties traversed by a luminous beam with specific polarization and propagation directions. The crystal is cut into the shape of an ellipsoid (14) and has a crystallographic symmetry being either uniaxial 622, 422 or 42m or cubic 43m or 23, the three perpendicular axes of the ellipsoid being orientated along three trirectangular crystallographic axes with the highest symmetry of the crystal. The sensor includes at least one measuring channel which includes a monochromatic light source (2) emitting an incident beam (4), a polarizing device (6) for polarizing the incident beam along a first crystallographic direction of the crystal, inlet fiber and lens (8, 12) for introducing the polarized incident beam into the crystal along a second crystallographic direction, an analyzing device (30) for analyzing the luminous beam emerging from the crystal, and a detection device (32) for detecting the analyzed luminous signal.
REFERENCES:
patent: 2788710 (1957-04-01), West
patent: 3575487 (1971-04-01), Ohm et al.
patent: 4510441 (1985-04-01), Yasuda et al.
patent: 4595876 (1986-06-01), Kuhara et al.
patent: 4631402 (1986-12-01), Nagatsuma et al.
patent: 4668052 (1987-05-01), Shirasaki
patent: 4929830 (1990-05-01), Bohnert et al.
patent: 4999570 (1991-03-01), Ehrler
Proceedings of the First International Conference on Optical Fibre Sensors, Apr. 26-28, 1983, pp. 164-168, "A Fibre Optic Electric Field Sensor Using the Electroopic Effect of Bi.sub.4 Ge.sub.3 O.sub.12 ", Shibata.
Review of Scientific Instruments, vol. 60, No. 7, Part 1, Jul. 1989, pp. 1252-1257, "Simultaneous Measurement of Two Orthogonal Components of Electric Field Using a Pockels Device," Hidaka et al.
SPIE, vol. 720, 1986, pp. 85-90, "Fiber Optic Field Sensor Configurations for High Bandwidth Lightning Research Measurement Applications" Nelson et al.
SPIE, vol. 720, 1986, pp. 100-104, "Photonic Electric-field Probe for Frequencies up to 2 GHz", Masterson.
Fast Electrical and Optical Measurements, vol. 1, 1986, pp. 57-71, "An Electro-Optical Technique for Measuring High Frequency Free Space Electric Fields", Chang et al.
An Introduction to Electrooptic Devices, Academic Press, pp. 44-51, 1974, Kaminow.
Commissariat a l''Energie Atomique
Nguyen Vinh
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