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<p>This study examines the impact of photonic crystal fiber coupler structures on the transmission characteristics and extinction ratios of triple-core couplers for all-optical logic operations, numerically. Two types of triple-core photonic crystal fiber (TPCF) couplers with planar light-guiding core arrangements are considered for analysis. The input pulse steering characteristics, essential for determining the optimal control signal power for logic operations, are derived using the nonlinear transmission curve obtained through the split-step Fourier algorithm. Subsequently, logic operations are performed by calculating extinction ratios for various input combinations. The results reveal significant variations in pulse switching behavior and extinction ratios across different TPCF configurations. These variations lead to substantial differences in the implementation of logic gates, depending on the specific structure and input conditions.</p>

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Influence of the photonic crystal fiber coupler structure on the extinction ratios for all-optical logic functionality

  • 期刊论文

  • 发表日期：

    2025年10月8日

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  • T. Uthayakumar,
  • N. Nallamuthu,
  • Namrata Yaduvanshi

摘要

This study examines the impact of photonic crystal fiber coupler structures on the transmission characteristics and extinction ratios of triple-core couplers for all-optical logic operations, numerically. Two types of triple-core photonic crystal fiber (TPCF) couplers with planar light-guiding core arrangements are considered for analysis. The input pulse steering characteristics, essential for determining the optimal control signal power for logic operations, are derived using the nonlinear transmission curve obtained through the split-step Fourier algorithm. Subsequently, logic operations are performed by calculating extinction ratios for various input combinations. The results reveal significant variations in pulse switching behavior and extinction ratios across different TPCF configurations. These variations lead to substantial differences in the implementation of logic gates, depending on the specific structure and input conditions.