A high-precision resonant optical voltage sensing and detection method
An optical voltage and resonant technology, applied in the direction of measuring current/voltage, measuring devices, measuring electrical variables, etc., can solve problems such as error, limited improvement effect, and difficulty in miniaturization of sensors
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[0107] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0108] The high-precision resonant optical voltage sensor of the present invention, through the design of the resonant optical path of dual-tracking, wherein two beams of linearly polarized light E U and E T Propagating along the BGO crystal, the temperature field of the two beams of light at the same time is the same, so the temperature change affects the polarized light E of the two lines U and E T The interference caused is also consistent. Synchronously detect two beams of linearly polarized light E in the signal detection circuit U and E T The frequency difference of the resonant frequency, the linearly polarized light E caused by the Pockels effect U Retention of frequency difference information of resonance frequency change, linearly polarized light E U and E T The remaining interference quantities in the BGO crystal propagation...
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