A novel d-type structured photonic crystal fiber sensor based on surface plasmon resonance

A technology of surface plasmon and photonic crystal fiber, which is applied in the direction of cladding fiber, optical waveguide, instrument, etc., to achieve the effects of improving sensitivity, facilitating filling, and reducing transmission loss

Inactive Publication Date: 2021-02-26
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology

[0006] The purpose of the present invention is to provide a new D-type structure photonic crystal fiber sensor based on surface plasmon resonance, which can effectively solve the problem of the uniformity of the metal nano-coating and the filling of the liquid to be measured, and facilitate the realization of high-sensitivity sensing and detection

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  • A novel d-type structured photonic crystal fiber sensor based on surface plasmon resonance
  • A novel d-type structured photonic crystal fiber sensor based on surface plasmon resonance
  • A novel d-type structured photonic crystal fiber sensor based on surface plasmon resonance

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Embodiment Construction

[0025] Such as figure 1 Figure 5 with Image 6 As shown, a new D-type structure photonic crystal fiber sensor based on surface plasmon resonance, including a substrate 5, its cross section is circular, the substrate material is silicon dioxide with stable performance, and a central air hole 1 is arranged in the center of the substrate , the air holes include small air holes and D-shaped large air holes, the central air hole is surrounded by small air holes 2, the small air holes are arranged in a triangle or a regular polygon, the central air hole and its neighborhood constitute the photonic crystal fiber core , that is, the area surrounded by small air holes constitutes the photonic crystal fiber core, and a D-shaped large air hole 3 is arranged outside each side of a triangle or a regular polygon, and the straight surface of the D-shaped large air hole is in line with the triangle or regular polygon Corresponding to the sides, and the straight surface of the D-shaped larg...

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Abstract

A new D-type structure photonic crystal fiber sensor based on surface plasmon resonance, including a substrate, an air hole and a gold nano-film, a central air hole is arranged in the center of the substrate, and the air hole includes a small air hole and a D-type large air hole. Small air holes are arranged around the air hole, the central air hole and its neighborhood constitute the core of the photonic crystal fiber, that is, the area surrounded by the small air hole constitutes the core of the photonic crystal fiber, and the small air holes are arranged in a triangle or a regular polygon. D-shaped large air holes are arranged on the outside of each side of the triangle or regular polygon, and the straight surface of the D-shaped large air hole corresponds to the side of the triangle or regular polygon, and the straight surface of the D-shaped large air hole is plated with gold Nano film, D-type large air holes can expand infinitely. It effectively solves the problems of the uniformity of the metal nano-coating and the filling of the liquid to be tested, and facilitates the realization of high-sensitivity sensing detection.

Description

technical field [0001] The invention relates to the technical field of photonic crystal fiber sensing, in particular to the technical field of D-type photonic crystal fiber sensing based on surface plasmon resonance. Background technique [0002] In today's era, whether it is food safety, environmental monitoring, or medical diagnosis, the applied sensors are required to have the characteristics of miniaturization, label-free, high sensitivity, fast real-time detection, etc. Therefore, the research on micro-integrated sensors has always been at the forefront of domestic and foreign subject, research on it has never stopped. Since the 1980s, sensors based on surface plasmon resonance technology have attracted extensive attention from researchers because of their high sensitivity and anti-interference characteristics. [0003] Surface plasmon resonance is a physical optical phenomenon. When light is incident on the surface of a metal medium, total internal reflection occurs t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/552G02B6/02
CPCG01N21/553G02B6/02304G02B6/02328
Inventor 邴丕彬隋佳蕾李忠洋谭联张红涛姚建铨国馨月黄世超
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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