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Temperature sensor based on Fano resonance

A temperature sensor and resonant cavity technology, applied in the field of optical communication technology and sensing, can solve the problems of complex sensor preparation method, difficult filling of sensing medium, difficult mass production, etc., and achieve low cost, small volume, and reduced full width at half maximum. Effect

Pending Publication Date: 2019-09-20
GUANGXI NORMAL UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, at present, although researchers are constantly improving the sensitivity, the sensitivity is still low, and the preparation method of the sensor is too complicated, and it is very difficult to fill the sensing medium, which is difficult to meet the requirements of mass production.

Method used

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  • Temperature sensor based on Fano resonance

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Experimental program
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Effect test

Embodiment

[0025] refer to figure 1 , a temperature sensor based on Fano resonance, including a base layer 1 and a metal layer 2 sequentially stacked from bottom to top, and the metal layer 2 is provided with a first resonant cavity 3 and a second resonant cavity that are not in communication with each other Cavity 4, wherein, the first resonant cavity 3 is a cavity in which a rectangular cavity and a cavity with a semicircular shape are integrated, the cavity with a semicircular shape is located in the middle of the rectangular cavity, and the second resonant cavity 4 is a cavity with a semicircular shape A "T" shaped resonant cavity, the first resonant cavity 3 and the second resonant cavity 4 are filled with a temperature-sensitive medium.

[0026] The base layer 1 is silicon dioxide.

[0027] The metal layer 2 is a silver layer.

[0028] The dimensions of the first resonant cavity 3 and the second resonant cavity 4 can be adjusted.

[0029] The thicknesses of the first resonant ca...

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Abstract

The invention discloses a temperature sensor based on Fano resonance. The temperature sensor based on Fano resonance comprises a substrate layer and a metal layer which are sequentially overlapped from bottom to top, wherein a first resonant cavity and a second resonant cavity which do not communicate with each other are arranged in the metal layer; the first resonant cavity is a cavity which is formed by integrating a rectangular cavity and a cavity in a semicircular shape; the cavity in the semicircular shape is positioned at the middle portion of the rectangular cavity; the second resonant cavity is a resonant cavity in a T-shaped shape; and the first resonant cavity and the second resonant cavity are filled with temperature sensing media. The surface plasma sensor has the advantages of the small volume, the quick response, the simple preparation process and the low cost, and can improve the sensitivity and the Q value and can reduce the full width at half maximum of a Fano resonance spectral line, thereby achieving the nano-scale sensing in the field of biological and medical detection.

Description

technical field [0001] The invention relates to the field of optical communication technology and sensing, in particular to a temperature sensor based on Fano resonance. Background technique [0002] Fano resonance is formed by the mutual interference between the continuous state energy band (broad radiative bright mode) and the discrete state energy level (narrow non-radiative dark mode), and its resonance line type shows obvious asymmetry and influence on structural parameters and surrounding environment Very sensitive. The propagation of Fano resonance based on surface plasmon polaritons (SPPs) on nanostructures breaks through the limitations of the original atomic physics and classical optical theory. At the same time, its sharp and asymmetric extinction spectrum can increase the resolution of the sensor. The field of sensing has great potential application value and has been widely concerned by researchers. The Fano resonance effect found in the SPP system has a wide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/00
CPCG01K11/00
Inventor 朱君王各
Owner GUANGXI NORMAL UNIV
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