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<p>An outstanding square core-photonic crystal fiber (SC-PCF) sensor for pregnancy discovery in the terahertz (THz) ranges is proposed in this research work. The biosensor is developed using simulations conducted with COMSOL Multiphysics and is based on the refractive indices of urine, a parameter that is influenced by the fluctuation of hormones through pregnancy. To build this structure with appropriate numerical settings, the COMSOL Multiphysics–based finite element technique (FET) and perfectly matched layer (PML) boundary conditions have been abandoned. According to the numerical study, this fiber exhibits a low confinement loss (CLS) of 0.765 × 10<sup>–10</sup>&#xa0;cm<sup>−1</sup> and a high relative sensitivity (RS) of 96.30% for the 1.5-THz monitoring zone. Additionally, other optical characteristics like total power factor (PF) and effective area (EA) are carefully considered with the required graphical results. Consequently, it is obvious that our projected SC-PCF will be more suitable for industrial and biomedical settings, particularly for biosensors to identify possible uses in hospitals and environmental monitoring.</p>

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Innovative Medical Imaging Using Photonic Crystal Fiber Photodetector (PCFP) with Ultra-High Efficiency for Pregnancy Testing

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • Sultan S. Aldkeelalah,
  • Ammar Armghan,
  • Mahmoud M. M. Abu Hasanein,
  • Malek G. Daher,
  • Tamer Ahmed Farrag,
  • Mahmoud M. A. Eid

摘要

An outstanding square core-photonic crystal fiber (SC-PCF) sensor for pregnancy discovery in the terahertz (THz) ranges is proposed in this research work. The biosensor is developed using simulations conducted with COMSOL Multiphysics and is based on the refractive indices of urine, a parameter that is influenced by the fluctuation of hormones through pregnancy. To build this structure with appropriate numerical settings, the COMSOL Multiphysics–based finite element technique (FET) and perfectly matched layer (PML) boundary conditions have been abandoned. According to the numerical study, this fiber exhibits a low confinement loss (CLS) of 0.765 × 10–10 cm−1 and a high relative sensitivity (RS) of 96.30% for the 1.5-THz monitoring zone. Additionally, other optical characteristics like total power factor (PF) and effective area (EA) are carefully considered with the required graphical results. Consequently, it is obvious that our projected SC-PCF will be more suitable for industrial and biomedical settings, particularly for biosensors to identify possible uses in hospitals and environmental monitoring.