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Reflection type temperature sensing probe based on double-layered photonic crystal thin film

A photonic crystal and sensing probe technology, which is applied in the field of temperature sensing, can solve the problems that the sensor cannot work in series, the optical fiber sensor has low sensitivity and precision, and has poor anti-interference ability, and achieves strong multiplexing ability and strong anti-interference ability. , high precision effect

Inactive Publication Date: 2016-07-20
NO 49 INST CHINESE ELECTRONICS SCI & TECH GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that traditional sensors cannot work in series, have poor anti-interference ability, and have low sensitivity and precision of optical fiber sensors, thereby providing a reflective temperature sensing probe based on a double-layer photonic crystal film

Method used

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  • Reflection type temperature sensing probe based on double-layered photonic crystal thin film
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  • Reflection type temperature sensing probe based on double-layered photonic crystal thin film

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specific Embodiment approach 1

[0020] Specific implementation mode one: combine Figure 1 to Figure 3 This embodiment is specifically described. The reflective temperature sensing probe based on the double-layer photonic crystal thin film described in this embodiment includes a double-layer photonic crystal thin film 1, an optical fiber 2 and a capillary quartz tube 3;

[0021] The capillary quartz tube 3 is fixed on one end of the optical fiber 2, the double-layer photonic crystal film 1 is fixed on the end face of the capillary quartz tube 3, the axis of the double-layer photonic crystal film 1, the axis of the optical fiber 2 and the axis of the capillary quartz tube 3 are all coincident , air holes are distributed on the double-layer photonic crystal film 1, and the air holes surround the axis of the double-layer photonic crystal film 1 in a regular polygonal, circular or rectangular periodic distribution. The air holes are dumbbell-shaped, and the hole depth direction of the air holes is Axial directio...

specific Embodiment approach 2

[0024] Specific embodiment 2: This embodiment is to further illustrate the reflective temperature sensing probe based on the double-layer photonic crystal film described in the specific embodiment 1. In this embodiment, the double-layer photonic crystal film 1 is bonded by epoxy resin. Fixed on the end face of the capillary quartz tube 3.

[0025] It is bonded with epoxy resin, and the bond is firm.

specific Embodiment approach 3

[0026] Specific embodiment three: This embodiment is a further description of the reflective temperature sensing probe based on the double-layer photonic crystal film described in the first or second specific embodiment. In this embodiment, the double-layer photonic crystal film 1 passes through the epoxy The resin is fixed on the cladding at one end of the optical fiber 2 and the end surface of the coating layer.

[0027] During the bonding process, it is necessary to ensure that the fiber core is not polluted by epoxy resin.

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Abstract

The invention provides a reflection type temperature sensing probe based on a double-layered photonic crystal thin film, relating to the technical field of temperature sensing, and aiming at solving the problems that a traditional sensor cannot be connected in series to work and has a poor anti-interference capability, and the sensitivity and the precision of an optical fiber sensor are low. A capillary quartz tube fixedly sleeves one end of an optical fiber; the double-layered photonic crystal thin film is fixed on the end face of the capillary quartz tube; the axis of the double-layered photonic crystal thin film, the axis of the optical fiber and the axis of the capillary quartz tube are overlapped; air holes are distributed in the double-layered photonic crystal thin film, and are periodically distributed in a regular polygon shape, a round shape or a square shape around the axis of the double-layered photonic crystal thin film; the air holes are dumbbell-shaped; and the hole depth direction of the air holes is the axial direction of the optical fiber. The reflection type temperature sensing probe based on the double-layered photonic crystal thin film has the advantages of high sensitivity, high precision, strong reutilization capability and strong anti-interference capability, and is applicable to the temperature sensing.

Description

technical field [0001] The invention relates to the technical field of temperature sensing, in particular to a temperature sensing probe based on a double-layer photonic crystal film. Background technique [0002] In recent decades, in the field of aerospace, the continuous advancement of aircraft technology and harsh and complex application environments have made traditional electronic and electromechanical sensors gradually unable to meet the needs of actual measurement. Although the traditional electronic temperature measurement and sensing system can achieve high-precision measurement, it cannot work in series, it is difficult to comprehensively characterize the performance of the spacecraft on a large scale, and it is impossible to systematically monitor the overall temperature distribution of the spacecraft. At the same time, the harsh electromagnetic radiation of the space station It will cause great interference to platinum resistance temperature sensors, and the res...

Claims

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Application Information

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IPC IPC(8): G01K11/32
CPCG01K11/32
Inventor 邵志强刘兴宇陈曦曹永海孙权桂永雷张蓬
Owner NO 49 INST CHINESE ELECTRONICS SCI & TECH GRP