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Sensitivity detection and analysis method of SPR sensor

An analysis method and technology of an analysis system are applied in the field of sensitivity detection methods and systems of ion resonance sensors, and can solve problems such as difficulty in grasping side-throw optical fiber SPR sensors.

Pending Publication Date: 2020-07-03
SHENZHEN UNIV
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  • Application Information

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Problems solved by technology

However, there are few studies on surface roughness and sensing properties, and it is difficult to grasp the influence of surface roughness on side-polished fiber optic SPR sensors on their plasma generation and resonance characteristics. However, there is a lack of effective detection methods for the optical characteristics of surface roughness

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  • Sensitivity detection and analysis method of SPR sensor
  • Sensitivity detection and analysis method of SPR sensor
  • Sensitivity detection and analysis method of SPR sensor

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Embodiment Construction

[0062] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0063] SPR, Surface Plasmon Resonance, translated as Surface Plasmon Resonance. The technology is a charge density oscillation, which is related to the surface plasmon wave (Surface Plasmon Wave, SPW) at the interface of two substances with opposite dielectric constants (such as metal and dielectric).

[0064] When the incident light with matching frequency and phase is transmitted in the dielectric, SPW waves will be generated at the interface between the metal and the dielectric. Due to the existence of the SPR effect, the absorption peak of specific wavelength light can be detected in the transmitted light. When the external refractive index or temperature and other environmental parameters change, the SPR absorption peak will move or its...

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Abstract

The invention provides a sensitivity detection and analysis method of an SPR (Surface Plasmon Resonance) sensor, which is used for detecting an SPR vibration sensor and comprises the following steps:detecting the surface of the SPR sensor to obtain roughness data; generating a roughness fractal dimension according to the roughness data; roughness fractal dimension modeling is applied, and the sensitivity of the SPR sensor is detected and analyzed. According to the technical scheme, an interferometer or a scanning probe microscope in any form is used for detecting the surface of the SPR sensor, and roughness data of the SPR sensor can be preliminarily collected. Based on the fractal theory, trial and error processing is carried out on the roughness data according to the Vilstus function, and then the roughness fractal dimension can be obtained. Due to the fact that the roughness fractal dimension describes the space filling capacity of the object, the property of the SPR sensor composite layer can be obtained, modeling is conducted according to the property, and the sensitivity of the SPR sensor is detected and analyzed.

Description

technical field [0001] The invention relates to the detection of sensors, in particular to a sensitivity detection method and system of a surface plasmon resonance sensor. Background technique [0002] SPR fiber optic sensor, that is, surface plasmon resonance sensor, is currently widely used in polarization, resonance, switching and other fields due to its characteristics of being suitable for remote measurement, compact structure, and fast response. Side polishing and coating with precious metals is a common fabrication method for single-mode fiber optic SPR sensors. Polished surface is a typical machined surface, and microscopic roughness is the main feature of this type of surface, which will affect the performance of various optical components. However, there are few studies on surface roughness and sensing properties, and it is difficult to grasp the influence of surface roughness on side-polished fiber optic SPR sensors on their plasma generation and resonance charac...

Claims

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Application Information

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IPC IPC(8): G06F30/23G01B11/30
CPCG01B11/30Y02T90/00
Inventor 李明全刘申王英白志勇廖常锐何俊王义平
Owner SHENZHEN UNIV