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Photon crystal optical fibre fluorescent temperature sensor and measuring system

A technology of photonic crystal fiber and fluorescent temperature, which is applied in thermometers, measuring heat, measuring devices, etc., can solve the problems of limited doping materials, high doping cost, and low doping concentration, and achieve high fluorescent substance concentration and high Effects of fluorescence efficiency and sensitivity improvement

Active Publication Date: 2008-07-09
李学金
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Problems solved by technology

The disadvantage of this method is that doping is difficult, doping materials are limited, doping concentration is low, doping cost is high, and sensitivity is low

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  • Photon crystal optical fibre fluorescent temperature sensor and measuring system

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Embodiment Construction

[0022] The invention is a temperature sensor designed based on the temperature effect of fluorescence by using photonic crystal fiber. It fills the micropores of the photonic crystal fiber with fluorescent substances, and when the excitation light is transmitted through the photonic crystal fiber, the fluorescent substances are excited to generate fluorescence. The fluorescence signal is related to temperature, and the fluorescence is transmitted and output by optical fiber. The temperature can be measured by measuring the change of fluorescence intensity with temperature or the decay speed of fluorescence intensity with temperature.

[0023] Please refer to FIG. 1 , which is a schematic diagram of the optical fiber section principle of the photonic crystal optical fiber fluorescence temperature sensor of the present invention.

[0024] The photonic crystal fiber fluorescence temperature sensor includes a fiber core 11 and tiny air holes 12 regularly arranged along the axial d...

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Abstract

The invention provides a photonic crystal fiber fluorescence temperature sensor measurement system, which comprises a light source, a photonic crystal fiber fluorescence temperature sensor and a spectrometer, wherein, the light beam emitted from the light source is coupled with the photonic crystal fiber fluorescence temperature sensor; and the spectrometer is used for measuring the fluorescence spectrum emitted by the photonic crystal fiber fluorescence temperature sensor so as to measure the temperature according to the fluorescence characteristic of the photonic crystal fiber fluorescence temperature sensor. According to the invention, the sensitivity of the photonic crystal fiber fluorescence temperature sensor can be greatly improved by filling a fluorescent material in the photonic crystal fiber fluorescence temperature sensor.

Description

technical field [0001] The invention relates to a temperature sensor, in particular to a photon crystal fiber fluorescent temperature sensor and a measurement system formed by utilizing the temperature characteristics of photonic crystal fiber and fluorescent substances. Background technique [0002] Temperature is the most commonly used parameter in industrial production and life. There are many traditional sensors for temperature measurement, such as traditional thermocouples, thermistors, bimetallic temperature sensors and so on. In recent years, with the rapid development of optical fiber technology, the optical fiber temperature sensor has the advantages of large dynamic range, high sensitivity, anti-electromagnetic interference, etc., and has attracted more and more attention. Optical fiber fluorescence temperature sensor is an important branch of optical fiber temperature sensor. [0003] The fluorescent fiber optic temperature sensor uses the characteristics that th...

Claims

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Application Information

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IPC IPC(8): G01K11/32G02B6/02
Inventor 李学金
Owner 李学金
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