Optical-fiber sensor, preparation method and measuring system

Abstract

The invention discloses an optical-fiber sensor, a preparation method and a measuring system. The optical-fiber sensor comprises a D-shaped photonic crystal optical fiber, wherein the cross section of the D-shaped photonic crystal optical fiber is D-shaped, so that the D-shaped photonic crystal optical fiber has a plane on which a nano metal sensing layer is adhered. The optical-fiber sensor disclosed by the invention adopts the D-shaped photonic crystal optical fiber, the D-shaped photonic crystal optical fiber can be a hollow photonic crystal optical fiber, a central hole is filled with a solution for controlling the effective refractive index and dispersivity of transmitting light, and resonance points of surface plasma resonance is changed by controlling the wave vector length of a core mold, so that the movement of resonance wavelength caused by change of external environment is expanded, the sensitivity of the sensor is improved, and high-accuracy refractive index measurement is realized; the optical-fiber sensor, the preparation method and the measuring system can be used for researching the high-sensitivity biochemical reaction analysis.

Description

technical field [0001] The invention belongs to the field of optical sensors, and more specifically relates to an optical fiber sensor, a preparation method and a measurement system. Background technique [0002] Surface Plasmon Resonance (SPR) detection technology is the most successful biochemical detection technology in the past three decades, widely used in proteomics, cell signaling, receptor / ligand, antibody / antigen molecular fishing, immune recognition, In life science fields such as cancer research and new drug screening, it can realize real-time and dynamic research on biomolecular interaction processes such as protein-protein, protein-nucleic acid, new drug molecule-target protein, etc., and has become a standard tool in life science and pharmaceutical research. In recent years, due to the advantages of compact structure, high sensitivity, real-time monitoring, easy to achieve specific detection, no need to label samples, and in situ online monitoring, fiber optic ...

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides an optical fiber sensor, the purpose of which is to improve the performance of the sensor and facilitate mass production, thereby solving the problem of the lack of full use of the photonic crystal fiber in the prior art for the regulation of the electromagnetic field. function, which leads to the problem of insufficient performance of the sensor

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