Chaos Brillouin optical coherence domain analysis distributed optical fiber sensing device and method

A distributed optical fiber and sensing device technology, which is applied in the direction of using optical devices, using optical devices to transmit sensing components, measuring devices, etc., can solve the problem of low spatial resolution and the inability of distributed optical fiber sensing systems to take into account both spatial resolution and Sensing distance, limited sensing distance and other issues, to achieve the effect of extending the sensing distance and overcoming the spatial resolution and sensing distance

CN105136178AActive Publication Date: 2015-12-09太原网讯同诚科技有限公司

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: 太原网讯同诚科技有限公司
Publication Date: 2015-12-09

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Abstract

The invention relates to a distributed optical fiber sensing system, and in particular relates to a chaos Brillouin optical coherence domain analysis distributed optical fiber sensing device and method. According to the invention, the problems of unavailable spatial resolution and sensing distance combination, severely limited sensing distance and low spatial resolution of the existing distributed optical fiber sensing system are solved. The chaos Brillouin optical coherence domain analysis distributed optical fiber sensing device comprises a wide spectrum chaos semiconductor laser, a 1*2 optical fiber coupler, an optical scrambler, an optical isolator, a first optical amplifier, a variable optical delay line, a second optical amplifier, an optical circulator, a sensing optical fiber, a tunable optical filter, a broadband gain photodetector, a data acquisition device, a signal processing device and a display device. The device and the method, which are provided by the invention, are applicable to the field of distributed optical fiber sensing.

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technical field

[0001] The invention relates to a distributed optical fiber sensing system, in particular to a distributed optical fiber sensing device and method for chaotic Brillouin optical coherence domain analysis. Background technique

[0002] Distributed optical fiber sensing system has been widely used in aerospace, petrochemical, electric power industry, nuclear industry, civil engineering due to its advantages of distributed measurement, long monitoring distance, high spatial resolution, fast response time, anti-electromagnetic interference and military fields. At present, distributed optical fiber sensing systems can be divided into the following three types according to the scattering mechanism in optical fibers: distributed optical fiber sensing systems based on Rayleigh scattering, distributed optical fiber sensing systems based on Raman scattering, and distributed optical fiber sensing systems based on Brillouin scattering. distributed optical fiber sensing s...

Claims

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