Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Patent
1988-05-31
1989-06-20
Karlsen, Ernest F.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Using radiant energy
350356, 350376, G01R 1900, G01R 3100, G02F 109
Patent
active
048412341
ABSTRACT:
A voltage detector detects a voltage developing in a selected area of an object such as an integrated circuit by utilizing an electro-optic material equipped in an optical probe. A change in refractive index of the electro-optic material which is caused by the voltage in the object, is detected as a change of polarization of a light beam passing through the electro-optic material. In order to improve the detection sensitivity the voltage detector is equipped with an optical means for making light paths of an input light and an output light different from each other.
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Aoshima Shinichiro
Tsuchiya Yutaka
Hamamatsu Photonics Kabushiki Kaisha
Karlsen Ernest F.
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