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Optical fiber oxygen measurement sensor

An oxygen sensor and optical fiber technology, applied in color/spectral characteristic measurement, instruments, biological testing, etc., can solve the problem of low sensitivity of a single butterfly cone structure, achieve temperature insensitivity, improve sensing performance, specificity Strong binding effect

Pending Publication Date: 2019-03-08
CHINA JILIANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The butterfly cone structure is a new type of interference structure, but the sensitivity of a single butterfly cone structure is not high

Method used

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  • Optical fiber oxygen measurement sensor

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Embodiment Construction

[0010] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0011] See attached figure 1 , the present invention is realized through the following technical solutions: an optical fiber oxygen sensor, consisting of a broadband light source (1), an air chamber (2), an air outlet (3), an air inlet (4), a butterfly cone (5), an oxygen Sensitive film (6), spectrometer (7), oxygen cylinder (8), nitrogen cylinder (9), gas flow meter (10), femtosecond laser (11) and fiber grating (12), characterized in that: broadband light source The right end of (1) is connected to the left end of the butterfly cone (5), and the right end of the butterfly cone (5) is connected to the spectrometer (7). The butterfly cone (5) is placed inside the gas chamber (2), and the oxygen cylinder ( 8) Connect to port 1 of the gas flow meter (10), connect the nitrogen cylinder (9) to port 2 of the gas flow meter (10), and conne...

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Abstract

The invention discloses an optical fiber oxygen measurement sensor. The sensor is composed of a broadband light source, a gas chamber, a gas outlet, a gas inlet, a butterfly-shaped cone, an oxygen-sensitive membrane, a spectrograph, an oxygen cylinder, a nitrogen cylinder, a gas flowmeter, a femtosecond laser and a fiber Bragg grating. According to the sensor, the oxygen-sensitive membrane specifically uses hemoglobin, and a coating method is an optical fiber photo-thermal method; the fiber Bragg grating prepared by adopting twin-core fine-core optical fibers achieves the temperature compensation effect for the whole sensor, and the influence of the temperature on the sensor is eliminated; the femtosecond laser is used for processing single-mode fibers, a butterfly-shaped cone structure ismanufactured on an optical fiber fusion splicer, the cladding thickness of the structure is smaller than that of a common butterfly-shaped cone structure, and the sensing performance of the structurecan be improved; during measurement, oxygen is combined with the hemoglobin of the oxygen-sensitive membrane, and at the moment, the effective refractive index changes; and the change of the effective refractive index can cause the change of the interference peak of interference spectrum on the spectrograph, and the concentration of the oxygen can be detected by observing the change of the interference peak on the spectrograph.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensing, in particular to the technical field of an optical fiber oxygen sensor. Background technique [0002] Optical fiber sensors have attracted the attention of many scientific researchers because of their advantages such as flexible design and strong anti-electromagnetic interference. In recent years, fiber optic curvature sensors have been published in major journals, and most of the researchers focus on improving or proposing new interference structures. The butterfly cone structure is a new type of interference structure, but the sensitivity of a single butterfly cone structure is not high. [0003] Aerobic cellular respiration depends on mitochondria for oxygen and nutrients; indeed, disruption of the oxygen cascade from the ambient to the subcellular environment can lead to hypoxia. Efficient oxygen delivery depends on a coordinated interaction between the respiratory and circula...

Claims

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Application Information

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IPC IPC(8): G01N21/45G01N21/25G01N33/72
CPCG01N21/25G01N21/45G01N33/721G01N2021/458
Inventor 沈常宇帅少杰孙志强
Owner CHINA JILIANG UNIV
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