Optical current transformer based on dual-wavelength structure and measurement method thereof
A technology of current transformer and measurement method, applied in measurement device, measurement of electrical variables, voltage/current isolation, etc., can solve problems such as the influence of measurement results
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[0021] Such as figure 1 Shown is a schematic structural diagram of the optical current transformer based on the dual-wavelength structure of the present invention. Wherein, the light source is a double light source (the first light source 1 and the second light source 2), and the two light sources have different wavelengths, and the light emitted by the two light sources enters the same optical fiber through the fiber coupler coupling 3, and the light beam passes through the first collimator 9 After being collimated, it enters the polarizer 10, and after passing through the polarizer 10, it becomes polarized light and enters the magneto-optic crystal 11, and the light emitted by the magneto-optic crystal 11 passes through the polarization beam splitter prism 12 and becomes two beams of light whose polarization directions are perpendicular to each other , a beam of light is output by the second collimator 13, and then the light of different wavelengths is separated by the first...
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