Novel D-shaped structured photonic crystal fiber sensor based on surface plasma resonance
A technology of surface plasmon and photonic crystal fiber, which is applied in the direction of cladding fiber, optical waveguide and light guide, instrument, etc., to achieve the effect of stable chemical properties, not easy to oxidize, and conducive to filling
Inactive Publication Date: 2019-04-09
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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[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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[0025] Such as figure 1 Figure 5 with Image 6 As shown, a new D-type structured photonic crystal fiber sensor based on surface plasmon resonance includes a substrate 5 with a circular cross-section. The substrate material is silica with stable performance. A central air hole 1 is provided in the center of the substrate. The air holes include small air holes and D-shaped large air holes. Small air holes 2 are arranged around the central air hole. The small air holes are arranged in a triangular or regular polygonal arrangement. The central air hole and its neighbors constitute the photonic crystal fiber core , That is, the area enclosed by the small air holes constitutes the core of the photonic crystal fiber. A D-shaped large air hole 3 is arranged on the outside of each side of the triangle or regular polygon, and the linear surface of the D-shaped large air hole is the same as the triangle or regular polygon. Corresponding to the sides, and the linear surface of the D-shape...
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Abstract
The invention discloses a novel D-shaped structured photonic crystal fiber sensor based on surface plasma resonance. The sensor comprises a base, air holes and gold nano-films, wherein a central air hole is formed in the center of the base, the air holes include small air holes and D-shaped big air holes, the small air holes are arranged around the central air hole, the central air hole and the neighborhood form a photonic crystal fiber core, that is, the region defined by the small air holes forms the photonic crystal fiber core, the small air holes are arranged in a triangle or regular polygon, one D-shaped big air hole is arranged outside each side of the triangle or regular polygon, straight line surfaces of the D-shaped big air holes correspond to the sides of the triangle or regularpolygon, the straight line surfaces of the D-shaped big air holes are plated with the gold nano-films, and the D-shaped big air holes can be expanded infinitely. Through the novel D-shaped structuredphotonic crystal fiber sensor, the uniformity of metal nanometer coating and filling of to-be-tested liquid are effectively realized, and it is convenient to realize 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, and fast real-time detection. Therefore, the research of micro-integrable sensors has always been the frontier at home and abroad. Subject, the research on it has never stopped. Since the 1980s, sensors based on surface plasmon resonance technology have attracted wide attention from researchers due to 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 to produce evanescent ...
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Login to View More 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