Multi-parameter measuring device based on taper polarization-maintaining fiber grating photoelectric oscillator

Abstract

The invention provides a multi-parameter measuring device based on a taper polarization-maintaining fiber grating photoelectric oscillator comprising the following devices connected in sequence: a laser, a first polarization controller, a phase modulator, an optical fiber, a second polarization controller, a circulator, a photodetector, an electric amplifier, a coupler and a signal acquisition andprocessing unit, wherein a laser signal emitted by the source of the laser enters the phase modulator through the first polarization controller, the signal output from the phase modulator enters theoptical fiber for transmission, the output of the optical fiber is connected to the second polarization controller, the signal output from the second polarization controller enters the 1# port of thecirculator, a taper polarization-maintaining fiber grating sensor is arranged, the signal output from the 2# port of the circulator enters the taper polarization-maintaining fiber grating sensor, thetaper polarization-maintaining fiber grating sensor reflects part of the signal, the reflected signal enters the circulator through the 2# port of the circulator, and the signal output from the 3# port of the circulator enters the photodetector.

Description

technical field [0001] The present invention relates to a strain and temperature measurement device and method of a photoelectric oscillator, in particular to a multi-parameter measurement device and method based on a tapered polarization-maintaining fiber grating photoelectric oscillator Background technique [0002] Compared with traditional sensing technologies, fiber optic sensors have the advantages of low transmission loss, compact structure, high temperature resistance, corrosion resistance, anti-electromagnetic interference, and simple preparation process, especially the frequency bandwidth, large information capacity, and low transmission loss can be realized Long-distance and distributed measurement have been highly valued by researchers in recent years. At present, microwave photonics has emerged from the cross-merging of microwave technology and photonic technology. This direction gives full play to the advantages of photon and microwave technology and has become...

AI Technical Summary

Problems solved by technology

However, the research results reported so far do not take advantage of the high precision of the optoelectronic oscillator to realize the simultaneous detection of multiple parameters.

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