G - Physics – 01 – R
Patent
G - Physics
01
R
324/59, 324/79
G01R 31/28 (2006.01) G01R 1/07 (2006.01) G01R 13/00 (2006.01) G01R 29/00 (2006.01)
Patent
CA 1313223
Abstract This invention describes a method and apparatus for measuring a voltage waveform of an electrical signal on an electrical conductor. A signal is generated on the conductor, and a crystal is positioned over or on the conductor. A polarized light beam is directed through the crystal along a direction essentially perpendicular to the conductor. Birefringence is induced in the crystal, and the polarization of the beam is modulated in response essentially to only those components of the electrical field generated by the signal that are perpendicular to the conductor. The final step involves detecting the modulated polarization of the beam to generate a voltage waveform corresponding to that on the conductor.
591587
American Telephone And Telegraph Company
Kirby Eades Gale Baker
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