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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

Active Publication Date: 2015-12-09
太原网讯同诚科技有限公司
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Problems solved by technology

[0006] In order to solve the problem that the existing distributed optical fiber sensing system cannot take into account both the spatial resolution and the sensing distance, the sensing distance is severely limited, and the spatial resolution is low, the present invention provides a chaotic Brillouin optical coherence domain analysis distribution Type optical fiber sensing device and method

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

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Embodiment Construction

[0019] A distributed optical fiber sensing device for chaotic Brillouin optical coherence domain analysis, including a wide-spectrum chaotic semiconductor laser 1, a 1×2 fiber coupler 2, an optical scrambler 3, an optical isolator 4, a first optical amplifier 5, and Varying delay line 6, second optical amplifier 7, optical circulator 8, sensing fiber 9, tunable optical filter 10, broadband gain photodetector 11, data acquisition device 12, signal processing device 13, display device 14;

[0020] Wherein, the output end of the wide-spectrum chaotic semiconductor laser 1 is connected to the input end of the 1×2 fiber coupler 2;

[0021] The first output end of the 1×2 fiber coupler 2 is connected to the input end of the optical scrambler 3 through a single-mode fiber jumper; the output end of the optical scrambler 3 is connected to the optical isolator 4 through a single-mode fiber jumper The incident end is connected; the outgoing end of the optical isolator 4 is connected with...

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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.

Description

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...

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Application Information

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IPC IPC(8): G01D5/353G01K11/32G01B11/16G01K11/322
Inventor 张建忠张明江刘毅王云才张明涛冯昌坤
Owner 太原网讯同诚科技有限公司
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