Sodium ion concentration optical fiber sensor

Abstract

The invention discloses a sodium ion concentration optical fiber sensor. A Mach-Zehnder structure optical fiber comprises a single-mode optical fiber with a cladding layer and a fiber core, a first polishing portion and a second polishing portion are processed on the cladding layer through an optical fiber polishing technique, and the first polishing portion and the second polishing portion are arc grooves which surround the cladding layer and are provided with concave outer diameters; the first polishing portion and the second polishing portion are separated by a spacing portion; and an optical fiber SPR sensor and the Mach-Zehnder structure optical fiber are concentrically welded in the axial direction through a fusion welder. According to the sodium ion concentration optical fiber sensor, a surface plasmon resonance sensing technology and a low energy consumption optical fiber transmission technology are combined, and the advantages of high sensitivity, the small volume, anti-electromagnetic interference, fast response and the like are achieved, response to small changes of to-be-tested medium components on the sensor surface is sensitive, the sodium ion concentration optical fiber sensor is suitable for studying the physical and chemical phenomena of various medium solutions, can monitor the ion concentration in real time, eliminates temperature interference, is low in costand can be produced in mass.

Description

technical field [0001] The invention relates to the field of optical fiber devices, in particular to a sodium ion concentration optical fiber sensor. Background technique [0002] Sodium in the human body is the main cation for maintaining the physiological activities of cells. It is necessary to maintain the normal osmotic pressure and acid-base balance of the body, participate in the metabolism of sugar and protein, and ensure the normal function of neuromuscular. Its content is an important indicator of human physiological activities. The levels of sodium ions in urine and serum can be used clinically to diagnose some kidney and heart diseases. [0003] Under normal circumstances, the sodium ion concentration of the human body has a reasonable reference range. When the sodium ion is higher than the reference value, hypernatremia is manifested. On the contrary, when the sodium intake is insufficient, the sodium loss is serious, and the kidney disease turns into polyuria....

AI Technical Summary

Problems solved by technology

There are also corresponding reports on the research results of using these methods to determine the content of sodium ions, but the direct measurement of these detection methods often cannot meet the requirements, unless a large number of samples are concentrated to the detectable range of the analytical technique, which is not only time-consuming, labor-intensive, and The introduction of serious errors due to the concentration process cannot meet the requirements of monitoring, so the adoption of new high-sensitivity, high-accuracy and rapid analysis methods and detection technologies will become inevitable

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