Distributed optical fiber multi-parameter sensing measurement system

Abstract

The invention relates to the distributed optical fiber sensing technique, in particular to a distributed optical fiber multi-parameter sensing measurement system. The distributed optical fiber multi-parameter sensing measurement system solves the problem that according to an existing distributed optical fiber sensor, vibration information of sensing optical fibers can not be monitored. The distributed optical fiber multi-parameter sensing measurement system comprises a super-narrow-linewidth high-power optical fiber laser, a first 1*2 optical coupler, a single-side-band carrier suppression modulator, a second 1*2 optical coupler, a third 1*2 optical coupler, an electrooptical modulator, a first 2*1 optical coupler, a scrambler, an integrated wavelength division multiplexer, sensing optical fibers, a full-optical-fiber narrow-band low-noise Brillouin frequency shift, a narrow-band fiber bragg grating transmission filter, a second 2*1 optical coupler, a third 2*1 optical coupler, a first low-bandwidth high-gain photoelectric detector, a second low-bandwidth high-gain photoelectric detector and a data acquisition processing system. The distributed optical fiber multi-parameter sensing measurement system is suitable for various measurement fields.

Description

technical field [0001] The invention relates to distributed optical fiber sensing technology, in particular to an optical fiber distributed multi-parameter sensing and measuring system. Background technique [0002] Distributed optical fiber sensing technology refers to the technology that uses optical fiber as the sensing element and transmission element at the same time, and can realize the measurement of temperature and strain at different positions along the entire length of the optical fiber. Compared with other optical fiber sensing technologies, distributed optical fiber sensing technology has incomparable advantages, and it has become one of the research hotspots at home and abroad. At present, based on distributed optical fiber sensing technology, various forms of distributed optical fiber sensors have been developed, among which the most widely used are distributed optical fiber Raman photon sensors and distributed optical fiber Brillouin photon sensors. However, ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing distributed optical fiber sensor cannot monitor the vibration information of the sensing optical fiber, the present invention provides an optical fiber distributed multi-parameter sensing and measuring system

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