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D-type double-core photonic crystal fiber double-parameter plasma sensor

A technology of photonic crystal fiber and fiber sensor, which is applied in the direction of multi-core fiber, clad fiber, optical waveguide light guide, etc., can solve the problems of high cost, complicated production, and single detection parameter of the sensor, so as to prevent oxidation and improve tolerance performance , the effect of a wide range of detection

Pending Publication Date: 2021-11-12
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0007] Aiming at the problems of single technology for sensor detection parameters, complex fabrication, high cost, low sensitivity and accuracy, the purpose of the present invention is to provide a D-type dual-core dual-parameter plasma sensor based on photonic crystal fiber surface plasmon resonance

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  • D-type double-core photonic crystal fiber double-parameter plasma sensor
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  • D-type double-core photonic crystal fiber double-parameter plasma sensor

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Embodiment Construction

[0028] In order to make the technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below in combination with specific examples of the present invention and with reference to the accompanying drawings.

[0029] Specifically, the present invention proposes a D-type dual-core photonic crystal fiber dual-parameter plasma sensor, such as figure 1 As shown, the optical fiber sensor body is included, and it is characterized in that: the optical fiber sensor body is composed of photonic crystal fiber (1), fiber core (2), air hole (3), TiO 2 Layer (4), temperature-sensitive medium PDMS (5), analyte sensing area (6), metal film (7) and perfect matching layer (8), the entire photonic crystal fiber is in the shape of a D-shaped open ring channel, and the entire interior There are 23 air holes and are arranged in five layers in parallel. The first layer has two air holes on the left and right sides of...

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Abstract

The invention provides a D-type double-core photonic crystal fiber double-parameter plasma sensor. An optical fiber SPR sensor comprises a D-type photonic crystal optical fiber with an open annular channel and a curved side wall; a fiber core, an air hole, a metal film, a TiO2 layer, a temperature-sensitive medium, a liquid analyte and a perfect matching layer are comprised. The photonic crystal fiber is formed by arranging a fiber core of the photonic crystal fiber and air holes with the same size, a substrate material is quartz, one air hole in the middle of the fiber core is filled with a temperature-sensitive medium PDMS, and the outer ring thereof is coated with a metal film; and the metal film and the TiO2 layer are arranged on an open annular plane. The refractive index of the temperature-sensitive medium changes along with the change of the temperature, meanwhile, free electrons on the surface of a nanogold layer resonate to generate an absorption peak, the resonant wavelength of the absorption peak deviates, the temperature sensing measurement is realized by observing the deviation process of the resonant wavelength, and the surface plasmon resonance principle is adopted. The sensor is high in sensitivity, wide in detection range and high in corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of optical fiber surface plasmon resonance sensing, in particular to a D-type double-core photonic crystal optical fiber dual-parameter plasma sensor. Background technique [0002] Optical fiber surface plasmon resonance (SPR) sensors are very sensitive to changes in the refractive index of the external environment, and are widely used in various fields due to their high sensitivity, high resolution, and real-time detection. SPR is a surface plasmon wave excited at the interface due to the strong coupling of two electromagnetic wave modes. Since the position of the formant of the incident light is very sensitive to the background refractive index, the change of the background refractive index caused by various factors can be effectively detected through the analysis of the position of the formant. [0003] Surface plasmon resonance (SPR) technology is a new type of sensing and detection method developed in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/41G01K11/32G02B6/02
CPCG01N21/41G01K11/32G02B6/02042G02B6/02347G01N2201/088
Inventor 肖功利王博文杨宏艳曾丽珍苏佳鹏林志雄李海鸥李琦张法碧傅涛孙堂友陈永和刘兴鹏王阳培华
Owner GUILIN UNIV OF ELECTRONIC TECH
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