Patent ID: 6057677
Filing Date: 2000-05-02
Classification: G01R

Abstract:
An electrooptic voltage waveform measuring apparatus comprising:an electrooptic element having an electrooptic effect;a first electrode mounted on the electrooptic element and electrically coupled to an object to be measured;a first light source irradiating a light on the electrooptic element;a polarization analyzer analyzing a polarization state of the light passed through the electrooptic element and detecting a voltage waveform of the object;a second electrode mounted on the electrooptic element and separated from the first electrode;an amplifier having an input terminal coupled to the second electrode and outputting a low-frequency component of the voltage waveform of the object; anda voltage waveform combining processor obtaining a measured voltage waveform of the object by combining a high-frequency component of the voltage waveform of the object obtained from an output of the polarization analyzer and the low-frequency component of the voltage waveform of the object output from the amplifier.