Scholarlink

<p>In this work, we propose and analyze a novel B<sub>2</sub>O<sub>3</sub>-doped SiO<sub>2</sub>-based dual-core photonic crystal fiber (PhCF) sensor for petrol adulteration monitoring. The two core regions of the fiber, considered to be composed of 13.3% B<sub>2</sub>O<sub>3</sub> in an 86.7% SiO<sub>2</sub> matrix, form two evanescently coupled waveguides, supporting symmetric and antisymmetric super-modes. The petrol sample is considered to be infiltrated into the circular analyte channel positioned in middle of the two core regions. By changing the petrol adulteration level, we numerically investigate mode coupling and sensitivity of the proposed PhCF sensor using the finite-element method (FEM). Rigorous optimization of opto-geometric parameters of the dual-core PhCF, including the diameter of B<sub>2</sub>O<sub>3</sub>-doped SiO<sub>2</sub> cores, is performed to achieve optimal sensing performance by effectively localizing modal field in the analyte region. We also examined the impact of doped-core size on sensor performance by analyzing the modal power fraction within the analyte region. Our analysis reveals an exceptionally high sensitivity of <InlineEquation ID="IEq14"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12596_2025_2884_Article_IEq14.gif" Format="GIF" Height="6" Rendition="HTML" Resolution="72" Type="Linedraw" Width="17" /> </InlineMediaObject> <EquationSource Format="TEX">\(\sim \)</EquationSource> </InlineEquation> 27,300 nm/RIU for a small probe dimension of 1&#xa0;mm making it practically usable. In addition to its high sensitivity, the proposed fiber structure exhibits consistent uniformity in air-holes size and spacing between them, simplifying its configuration. Furthermore, the PhCF sensor, with its doped-cores, holds promise for broader applications, including the sensing of various analytes such as bio-chemical substances.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Highly sensitive B2O3-doped photonic crystal fiber sensor for fuel adulteration monitoring

  • 期刊论文

  • 发表日期：

    2025年9月18日

查看全文
  • Hukam Singh,
  • Saurabh Mani Tripathi

摘要

In this work, we propose and analyze a novel B2O3-doped SiO2-based dual-core photonic crystal fiber (PhCF) sensor for petrol adulteration monitoring. The two core regions of the fiber, considered to be composed of 13.3% B2O3 in an 86.7% SiO2 matrix, form two evanescently coupled waveguides, supporting symmetric and antisymmetric super-modes. The petrol sample is considered to be infiltrated into the circular analyte channel positioned in middle of the two core regions. By changing the petrol adulteration level, we numerically investigate mode coupling and sensitivity of the proposed PhCF sensor using the finite-element method (FEM). Rigorous optimization of opto-geometric parameters of the dual-core PhCF, including the diameter of B2O3-doped SiO2 cores, is performed to achieve optimal sensing performance by effectively localizing modal field in the analyte region. We also examined the impact of doped-core size on sensor performance by analyzing the modal power fraction within the analyte region. Our analysis reveals an exceptionally high sensitivity of \(\sim \) 27,300 nm/RIU for a small probe dimension of 1 mm making it practically usable. In addition to its high sensitivity, the proposed fiber structure exhibits consistent uniformity in air-holes size and spacing between them, simplifying its configuration. Furthermore, the PhCF sensor, with its doped-cores, holds promise for broader applications, including the sensing of various analytes such as bio-chemical substances.