Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1995-08-03
1998-09-15
Ballato, Josie
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324750, 324752, G01R 31308
Patent
active
058084738
ABSTRACT:
An electric signal measurement apparatus using the electro-optic sampling which is capable of measuring electric signals propagating on a signal line with only a lower disturbance, in a high precision over a wide bandwidth, and economically by a relatively compact apparatus size. The apparatus has a conductor body to be set in one point contact with the signal line, and an electro-optic material which changes a birefringence according to a strength of an electric field coupled by the conductor body, and which has a sufficient thickness between the lower surface and an upper surface such that a potential at the upper surface due to the electric field coupled by the conductor body is effectively zero. A polarization detector for detecting the laser beam with a polarization changed due to a change of the birefringence of the electro-optic material can be provided within a handy type probe body to which a probe head is attached.
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Nagatsuma Tadao
Shinagawa Mitsuru
Takeya Ken
Yaita Makoto
Ballato Josie
Kobert Russell M.
Nippon Telegraph & Telephone Corp.
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