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High-sensitivity temperature sensor based on composite micro-nanofiber resonant cavity

An optical fiber resonant cavity and temperature sensor technology, applied in the field of sensors, can solve problems such as low sensing sensitivity, achieve high temperature sensing sensitivity, and avoid the effects of low resonant cavity quality factor

Active Publication Date: 2017-04-26
枣庄市凯博港务有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem of low sensing sensitivity of the current micro-nano fiber resonator temperature sensor, and propose a high-sensitivity temperature sensor based on a composite micro-nano fiber resonator

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Embodiment 1

[0019] like figure 1 As shown, a high-sensitivity temperature sensor based on a composite micro-nano fiber resonator, including a light source 1, an input fiber 2, a first fiber coupling region 3, a first fiber 4, a second fiber 5, and a second fiber coupling region 6 , the third optical fiber 7, the output optical fiber 8 and the detection output system 9;

[0020] The optical output end of the light source 1 is connected to the optical input end of the input optical fiber 2, the optical output end of the input optical fiber 2 is connected to the first optical fiber 4 through the straight-through optical fiber of the first optical fiber coupling area 3, and the first optical fiber 4 passes through the optical fiber of the second optical fiber coupling area 6 The straight-through optical fiber is connected to the third optical fiber 7, the third optical fiber 7 is connected to the second optical fiber 5 through the coupling optical fiber of the first optical fiber coupling are...

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Abstract

The invention discloses a high-sensitivity temperature sensor based on a composite micro-nanofiber resonant cavity. The temperature sensor includes a light source, an input fiber, an output fiber, a detection output system, a first fiber coupling region, a first fiber, a second fiber, a second fiber coupling region and a third fiber. The input fiber has a light output end which is connected to the first fiber through a straight fiber in the first fiber coupling region. The first fiber is connected to the third fiber through a straight fiber in the second fiber coupling region. The third fiber is connected to the second fiber through a coupling fiber in the first fiber coupling region. The second fiber is connected to a light input end of the output fiber through the coupling fiber in the second fiber coupling region. The output fiber has a light output end which is connected to the light input end of the detection output system. The detection output system displays temperature. According to the invention, the temperature sensor has high temperature sensitivity, avoids the problems of small quality factor and low sensitivity of temperature sensing caused by small cross contact coupling coefficient of the micro-nanofiber.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a high-sensitivity temperature sensor based on a composite micro-nano fiber resonant cavity. Background technique [0002] The temperature sensor is a device that converts the temperature into an available output signal by using the law that the physical properties of the substance change with the temperature. At present, there are many kinds of temperature sensors, the most commonly used are thermal resistance and thermocouple temperature sensors, but the response signals of these sensors are Electrical signals, the sensor response is greatly affected by the electromagnetic field, in a strong electromagnetic field environment, the output is extremely unstable, or even unable to work, while the response signal of the optical temperature sensor is an optical signal, which is not affected by the electromagnetic field, so its application is more extensive, such as Fiber Bragg gratin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32G01K11/3206
CPCG01K11/32
Inventor 田赫
Owner 枣庄市凯博港务有限公司
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