Testing device and testing method for reciprocal reflective optical voltage sensing unit

Abstract

The invention provides a testing device and a testing method for a reciprocal reflective optical voltage sensing unit. The device comprises a light source, a polarizer, a polarization-maintaining circulator, an optical voltage sensing unit, an analyzer and an optical power tester, and a first port, a second port and a third port are arranged on the polarization-maintaining circulator. The method includes: setting a first testing point, a second testing point and a third testing point in the testing device; respectively performing 0-degree welding to the first testing point and the third testing point; respectively measuring optical power output by the testing device when the second testing point is subjected to 0-degree welding and 90-degree welding through the optical power tester, and testing whether performances of the optical voltage sensing unit are good or not through judging whether optical signals exist or not. By the testing device and the testing method, the performances of the optical voltage sensing unit can be effectively tested through judging whether output signals exist or not. The testing device has the advantages of simple structure, convenience in operation, accuracy in testing result and the like.

Description

technical field [0001] The invention belongs to the field of optical voltage transformers, and in particular relates to a test device and method for a reciprocal reflective optical voltage sensing unit. Background technique [0002] The reciprocal reflective optical voltage sensing unit can improve the anti-interference ability of the optical path, and can introduce mature digital closed-loop detection technology for signal detection, which improves the dynamic range and response sensitivity of the transformer. In the field of optical voltage transformers It has a good application prospect. The key performance of the sensing unit is to realize the mode exchange of the output linearly polarized light relative to the input linearly polarized light, so the performance of the sensing unit needs to be tested before use, and there is no complete and effective testing method and device yet. Contents of the invention [0003] In order to overcome the above-mentioned defects of th...

AI Technical Summary

Problems solved by technology

The key performance of the sensing unit is to realize the mode exchange of the output linearly polarized light relative to the input linearly polarized light. Therefore, the performance of the sensing unit needs to be tested before use. At present, there is no complete and effective testing method and device.

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