Voltage sensor and probe based on liquid crystal and optical fiber technology

Abstract

A voltage sensor probe based on the liquid crystal and optical fiber technology comprises a quartz tube with openings formed in the two ends. A metal sealing cover is arranged at the front end of the quartz tube. A metal reflector is arranged on the inner end face, located in the quartz tube, of the metal sealing cover. The voltage sensor probe further comprises a metal contact tube arranged at the rear end of the quartz tube. A glass substrate is fixed to one end of the metal contact tube. A closed inner cavity is formed by the glass substrate, the metal contact tube, the metal sealing cover and the quartz tube together and filled with liquid crystal. A polarization maintaining optical fiber is inserted in the metal contact tube and the front end face of the polarization maintaining optical fiber is axially perpendicular to a polarization maintaining optical fiber. A fiber bragg grating is arranged at the portion, located in the metal contact tube, of the polarization maintaining optical fiber. A polaroid is arranged between the front end face of the polarization maintaining optical fiber and the glass substrate. A voltage sensor based on the liquid crystal and optical fiber technology comprises an optical fiber coupler, polarization laser devices connected together through the optical fiber coupler, the voltage sensor probe based on the liquid crystal and optical fiber technology and a photoelectric detector.

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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