2024 Vol.7 Oct.N05

• Title: Design of high sensitivity photonic crystal fiber optic temperature sensor
• Name: Hailong Du
• Company: School of electronic and intelligent manufacturing,Zhengzhou Sias University,ZhengZhou 451150,China
• Abstract:

  Conventional fiber-optic temperature sensors may suffer from the lack of a highly sensitive porous structure design, leading to poor sensor performance due to a small but measurable change in the refractive index of the air cladding when the ambient temperature changes, which directly leads to a significant change in the transmission characteristics of light in the fiber. In this regard, the design of a highly sensitive photonic crystal fiber temperature sensor is proposed. A photonic crystal fiber (SCPCF) is used as the core, and the mode separation and selection of optical signals are achieved by precisely controlling the "defective" and non-defective regions. Its porous structure is highly sensitive to temperature changes, so that the optical transmission characteristics change significantly with temperature changes, forming a monitorable interference pattern. By simulating the transmission of optical signals in the defective and non-defective regions in SCPCF, we analyze the effect of temperature change on the refractive index of the optical fiber and the phase difference of the optical signals, and model the sensor. The photonic crystal fiber sensor with high-precision temperature response characteristics is constructed through the steps of cleaning, cutting, and fusing. Comparison of experimental results show that the new fiber optic sensor can be in a high temperature, high vibration environment, the spectrum analyzer stable connection time is longer, in line with the extension of the service life of fiber optic sensors for practical applications.

  
  

• Keyword: photonic crystals; optical fibers; temperature sensors; spectral analyzers; sensing structures;
• DOI: 10.12250/jpciams2024090112
• Citation form: Hailong Du.Design of high sensitivity photonic crystal fiber optic temperature sensor[J]. Computer Informatization and Mechanical System,2024,Vol.7,pp.54-58

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