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<p>This paper is intended to present the simulation of a novel design of photonic crystal fiber with versatile geometrical shape inclusions in the core and cladding region and establish the enhancement of the performance parameters of an optical pulse through the designed photonic crystal fiber. The presented design encompasses the regular circular lattice with five layers of air holes and rectangular/elliptical inclusions in the core and cladding regions embedded in the next generation host material, the cyclic olefin copolymer (zeonex) substrate. The design is optimized using full vector finite element modelling (FEM) with perfectly matched layer absorbing boundary conditions, this study evaluates the key performance parameters, including confinement loss, birefringence, effective mode index, and dispersion. For the optimized design configuration of PCF with oval-shaped elliptical holes and rectangular holes at the interspace of the innermost circular layer, results demonstrate ultralow confinement loss of 7.34<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\:\:\times\:{10}^{-16}\)</EquationSource> </InlineEquation> dB/km at 1.1&#xa0;μm and significantly improved birefringence of 14.2 <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\:\times\:{10}^{-3}\)</EquationSource> </InlineEquation> at 2&#xa0;μm, making it suitable for high-birefringence sensing and optical communication applications.</p>

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Novel zeonex based photonic crystal fiber featuring elliptical and rectangular air inclusions for ultralow confinement loss and enhanced birefringence

  • 期刊论文

  • 发表日期：

    2026年3月1日

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  • R. Niranjana,
  • Ancemma Joseph,
  • M. S. Mani Rajan

摘要

This paper is intended to present the simulation of a novel design of photonic crystal fiber with versatile geometrical shape inclusions in the core and cladding region and establish the enhancement of the performance parameters of an optical pulse through the designed photonic crystal fiber. The presented design encompasses the regular circular lattice with five layers of air holes and rectangular/elliptical inclusions in the core and cladding regions embedded in the next generation host material, the cyclic olefin copolymer (zeonex) substrate. The design is optimized using full vector finite element modelling (FEM) with perfectly matched layer absorbing boundary conditions, this study evaluates the key performance parameters, including confinement loss, birefringence, effective mode index, and dispersion. For the optimized design configuration of PCF with oval-shaped elliptical holes and rectangular holes at the interspace of the innermost circular layer, results demonstrate ultralow confinement loss of 7.34 \(\:\:\times\:{10}^{-16}\) dB/km at 1.1 μm and significantly improved birefringence of 14.2 \(\:\times\:{10}^{-3}\) at 2 μm, making it suitable for high-birefringence sensing and optical communication applications.