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<p>In this paper, a dual-core photonic crystal fibre (DC-PCF) sensor is proposed featuring a rectangular analyte channel, designed for fuel Adulteration sensing. The cladding area of this sensor includes rectangular air holes. The proposed fiber uses silica as a substrate material, and it is operating within a wavelength range of 2 to 3&#xa0;μm. PCF sensor has been analyzed by COMSOL Multiphysics software using finite element method (FEM). The wavelength sensitivity is planned as the peaks of the different transmission curve, the sensing varies from the range between 1.418 and 1.44 respectively, the highest value of the wavelength sensitivity for the x-pol is 87133.303&#xa0;nm/RIU for the RI 1.421 or with 20% concentration of kerosene in petrol and for the y-pol the highest value of the wavelength sensitivity is 195926.433&#xa0;nm/RIU for the RI 1.418 or with 0% concentration of kerosene in petrol. The proposed PCF sensor tackles all the complexity faced by the ordinary sensor. The fabrication of this PCF sensor is not complex, and it can be built by the technique of 3D-printing, stacks building and many more. The high coupling length and low birefringence values helps to increase the sensitivity of the sensor and plays an important role in fuel adulteration identification applications in future.</p>

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High-Sensitivity Fuel Adulteration Detection Using a Dual-Core Photonic Crystal Fiber Sensor with Rectangular Analyte Channel

  • 期刊论文

  • 发表日期：

    2025年6月10日

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  • Shyamal Kumar,
  • Sapana Yadav,
  • Vikash Mourya,
  • D. K. Dwivedi,
  • Pooja Lohia,
  • R. K. Yadav

摘要

In this paper, a dual-core photonic crystal fibre (DC-PCF) sensor is proposed featuring a rectangular analyte channel, designed for fuel Adulteration sensing. The cladding area of this sensor includes rectangular air holes. The proposed fiber uses silica as a substrate material, and it is operating within a wavelength range of 2 to 3 μm. PCF sensor has been analyzed by COMSOL Multiphysics software using finite element method (FEM). The wavelength sensitivity is planned as the peaks of the different transmission curve, the sensing varies from the range between 1.418 and 1.44 respectively, the highest value of the wavelength sensitivity for the x-pol is 87133.303 nm/RIU for the RI 1.421 or with 20% concentration of kerosene in petrol and for the y-pol the highest value of the wavelength sensitivity is 195926.433 nm/RIU for the RI 1.418 or with 0% concentration of kerosene in petrol. The proposed PCF sensor tackles all the complexity faced by the ordinary sensor. The fabrication of this PCF sensor is not complex, and it can be built by the technique of 3D-printing, stacks building and many more. The high coupling length and low birefringence values helps to increase the sensitivity of the sensor and plays an important role in fuel adulteration identification applications in future.