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<p>This study investigates a low power all-optical Boolean logic functionality based on triple core photonic crystal fiber coupler structures. By infiltrating the light-guiding cores with highly nonlinear liquid nitrobenzene, two distinct light guiding core geometries, namely, planar and triangular arrangements were modeled. Using the finite element method (FEM), we determined the effective refractive indices to calculate the critical optical parameters, including the group velocity dispersion, nonlinearity, coupling length, and confinement loss. These values were integrated into coupled nonlinear Schrödinger equations and numerically solved using the split-step Fourier method to evaluate the pulse steering characteristics. The analysis of the resulting transmission curves identified the optimal control signal power for each logic function, and the performance was further validated through extinction ratio analysis. The findings indicate a significant reduction in the input power required for logic functionality while maintaining a high figure of merit.</p>

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Low power all-optical logic functions using nonlinear liquid nitrobenzene in triple core photonic crystal fiber at 1550 nm

  • 期刊论文

  • 发表日期：

    2026年7月15日

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  • T. Uthayakumar,
  • C. Shruthi,
  • N. Raja,
  • N. Nallamuthu

摘要

This study investigates a low power all-optical Boolean logic functionality based on triple core photonic crystal fiber coupler structures. By infiltrating the light-guiding cores with highly nonlinear liquid nitrobenzene, two distinct light guiding core geometries, namely, planar and triangular arrangements were modeled. Using the finite element method (FEM), we determined the effective refractive indices to calculate the critical optical parameters, including the group velocity dispersion, nonlinearity, coupling length, and confinement loss. These values were integrated into coupled nonlinear Schrödinger equations and numerically solved using the split-step Fourier method to evaluate the pulse steering characteristics. The analysis of the resulting transmission curves identified the optimal control signal power for each logic function, and the performance was further validated through extinction ratio analysis. The findings indicate a significant reduction in the input power required for logic functionality while maintaining a high figure of merit.