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Side-polished polymer temperature sensing fiber and manufacturing method thereof

A technology for sensing optical fibers and polymers, which is applied in the field of optical fiber evanescent wave sensors, side-throw polymer temperature sensing optical fibers and manufacturing methods thereof, can solve the problems of low detection sensitivity and complex preparation process, and achieve high sensitivity and Low temperature output, good repeatability and good stability

Inactive Publication Date: 2017-05-17
CHINA AGRI UNIV
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Problems solved by technology

[0005] The invention provides a side-throwing polymer temperature sensing optical fiber with simple preparation process, high detection sensitivity, good selectivity and low-temperature output, a manufacturing method thereof, and an optical fiber using the side-throwing polymer temperature sensing optical fiber Evanescent wave sensor to solve the technical problems of complex preparation process and low detection sensitivity of the existing optical fiber evanescent wave sensor

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  • Side-polished polymer temperature sensing fiber and manufacturing method thereof
  • Side-polished polymer temperature sensing fiber and manufacturing method thereof
  • Side-polished polymer temperature sensing fiber and manufacturing method thereof

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[0027] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] see figure 1 As shown, the present invention provides a side-throwing polymer temperature sensing optical fiber, which includes a silicon wafer base 10 and an arc-shaped single-mode optical fiber 20, wherein the core 21 in the middle of the single-mode optical fiber 20 is exposed on the surface , and the middle part of the single-mode optical fiber 20 is fixed on the silicon wafer base 10 through the core 21 exposed on the surface, and the core 21 in the middle of the single-mode optical fiber 20 is provided with a polymer on the side away from the silicon wafer base 10. The coating 23 and the SiO2 coating layer 2224 , the SiO2 coating layer 2224 is fixed on the co...

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Abstract

The invention provides a side-polished polymer temperature sensing fiber. The side-polished polymer temperature sensing fiber is utilized to manufacture a fiber evanescent wave sensor, and on the basis of the evanescent wave coupling resonance principle and through utilization of an arc structure of a single-mode fiber, part of waves in transverse-magnetic polarized light in specific incident light are coupled into a planar waveguide formed by a polymer coating to a greater extent, so that evanescent waves are formed. The refractive index of a planar waveguide SiO2 coating is equal to the refractive index of a coating of the single-mode fiber, and polarization dependence caused by a planar waveguide birefringence structure is weakened. The invention also provides a fiber temperature sensor applying the above side-polished polymer temperature sensing fiber. The fiber temperature sensor has the advantages of being simple and fast in manufacturing technique, exhibiting good stability, good repeatability, high sensitivity and low temperature output, etc. Meanwhile, the sensor overcomes the disadvantages that a conventional electrochemical temperature sensor does not resist corrosion or electric radiation, etc.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, more specifically, to a side-throwing polymer temperature sensing optical fiber, a manufacturing method thereof, and an optical fiber evanescent wave sensor. Background technique [0002] In recent years, with the gradual development of automation and intelligence in modern industry, space technology, military and other fields, the requirements for sensor sensitivity, accuracy, reliability, etc. have been increasing. Traditional temperature sensors mainly include thermocouples, thermal resistance temperature sensors, thermistor temperature sensors and semiconductor temperature sensors, etc., but their sensitivity, linearity and interchangeability are poor. [0003] With the development of science and technology, people invented the optical fiber evanescent wave sensor, which uses the evanescent wave generated when the light wave is transmitted in the optical fiber by total reflectio...

Claims

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Application Information

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IPC IPC(8): G01K11/32
CPCG01K11/32
Inventor 孙龙清李亿杨邹远炳李玥
Owner CHINA AGRI UNIV
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