Multi-parameter measurement system based on micro-structure optical fiber interference microwave photon sensing method and method

A technology of microstructured optical fiber and sensing method, which is applied in the direction of transmitting sensing components, measuring force, and measuring devices by using optical devices, which can solve problems such as difficulty in overcoming cross-sensitivity, inability to realize simultaneous sensitivity of multiple parameters, and low sensitivity, and achieve Excellent spectral selection characteristics, improved accuracy and reliability, and the effect of strong sensitivity characteristics

Inactive Publication Date: 2019-04-16
杭州光预科技有限公司
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Problems solved by technology

[0004] At present, conventional fiber grating sensors can only measure parameters such as temperature and stress, and cannot realize simultaneous sensitivity of multiple parameters; Disadvantages such as cross sensitivity

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  • Multi-parameter measurement system based on micro-structure optical fiber interference microwave photon sensing method and method
  • Multi-parameter measurement system based on micro-structure optical fiber interference microwave photon sensing method and method

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Embodiment Construction

[0026] The characteristics and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only configured to explain the present invention, not to limit the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and ...

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Abstract

The invention provides a multi-parameter measurement system based on a micro-structure optical fiber interference microwave photon sensing method and method. The system mainly comprises a broad-spectrum light source (1), an optical filter (2), a 3dB optical fiber coupler (3), an adjustable optical delay line (4), an adjustable optical attenuator (5), a micro-structure optical fiber ring (6), a 2*2optical fiber coupler (7), an interference sensing unit (8), a spectral analyzer (9), an electro-optic modulator (10), a dispersion unit (11), a photodetector (12) and a vector network analyzer (13).By combining the optical fiber interference structure and the micro-structure optical fiber ring, multi-parameter sensing can be realized; and besides, in combination of the microwave photon filter,conversion from spectral measurement to frequency domain measurement is realized, the sensing sensitivity is thus greatly improved, and the simultaneous multi-parameter measurement ability is also achieved.

Description

technical field [0001] The invention relates to the fields of microwave photons, optoelectronics, fiber optics, and fiber optic sensing technology, and in particular to a multivariate parameter measurement system and method based on a microstructure optical fiber interference microwave photon sensing method. Background technique [0002] Major civil engineering structures, such as bridges, dams, tunnels, railways, etc., will inevitably be damaged by various natural and human factors during long-term use. widespread attention of the people. In the health monitoring of major engineering structures, it is often necessary to comprehensively analyze and judge the internal stress characteristics of the structure, temperature changes, and even its environmental parameters such as refractive index, so as to make a correct assessment of its internal damage. Therefore, the development of a high-precision detection system with simultaneous measurement of multiple parameters has become...

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Application Information

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IPC IPC(8): G01D5/353G01K11/32G01N21/45G01L1/24
CPCG01D5/35329G01K11/32G01L1/242G01N21/45G01N2021/458
Inventor 黄燚吴铁平
Owner 杭州光预科技有限公司
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