Voltage sensors and probes based on liquid crystal and fiber optic technology

Abstract

A voltage sensor probe based on liquid crystal and optical fiber technology, which includes a quartz tube with openings at both ends, a metal sealing cover is arranged at the front end of the quartz tube, and a metal reflector is arranged on the inner end surface of the metal sealing cover in the quartz tube; It also includes a metal conductive tube arranged at the rear end of the quartz tube. A glass substrate is fixed at one end of the metal conductive tube. The glass substrate, metal conductive tube and metal sealing cover form a closed inner cavity together with the quartz tube, and the inner cavity is filled with liquid crystal. ; Insert the polarization maintaining fiber into the metal conductive tube, the front end of the polarization maintaining fiber is perpendicular to the axis of the polarization maintaining fiber; a fiber grating is arranged on the polarization maintaining fiber in the metal conductive tube; between the front end of the polarization maintaining fiber and the glass substrate There are polarizers in between. A voltage sensor based on liquid crystal and fiber technology, which includes a fiber coupler and a polarized laser connected together through the fiber coupler, a voltage sensor probe and a photodetector based on liquid crystal and fiber technology.

Description

technical field [0001] The present application relates to a voltage sensor, in particular to a voltage sensor and a probe based on liquid crystal and optical fiber technology. Background technique [0002] Information technology and electronic automation have increasingly become the key development direction of human society and have become an indispensable part. Various electronic products have been widely used and popularized to cover all fields of human activities. For information technology or electronic technology, whether it is transmission or sensing, voltage is one of the most basic parameters and one of the most important parameters. Therefore, measuring and transmitting voltage signals is essential for information technology and electronic technology. [0003] Traditionally, measuring voltage or transmitting information is done through electronic chips, and voltage measurement, collection and transmission are generally performed through electronic circuits. Howev...

AI Technical Summary

Problems solved by technology

However, in some special applications, such as electromagnetic fields, radiation fields, etc., traditional electronic measurement methods are often subject to very large interference, especially in long-distance transmission, generally no longer than a few kilometers, it is necessary to build a relay station to compensate for the loss of the signal

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