Patent ID: 6683447
Filing Date: 2004-01-27
Classification: G01R

Abstract:
An electro-optic sampling apparatus comprising:the apparatus having an interior space defining the inside thereof; an electric input connector for inputting a measured electric signal, which is to be measured in voltage; a conductive path inside the apparatus for transmitting the measured electric signal, wherein the conductive path has at least a bare portion at which a conductor of the conductive path is made bare; an electro-optic material, which is fixed to the bare portion of the conductive path and whose birefringence ratio is varied in response to strength of electric field generated by the conductive path through which the measured electric signal transmits; a termination device for electrically terminating the conductive path; a light source for outputting a source laser beam toward the electro-optic material; measurement means measuring how the laser beam is varied in polarization in response to variations of the birefringence ratio of the electro-optic material; the apparatus being constructed as an oscilloscope; and further comprising a dielectric mirror for reflecting the laser beam which is varied in polarization in response to the variations of the birefringence ratio of the electro-optic material, so that the measurement means measures the source laser beam voltage with respect to the reflected laser beam.