Abstract
This article explores the influence of structural asymmetry on the delivery of all-optical logical binary half adder function through triple-core photonic crystal fiber. For the proposed aim, the study considers different configurations of symmetric as well as asymmetric triple-core photonic crystal fiber involving optical guiding cores arranged in a planar and triangular fashion. The role of geometrical asymmetry is investigated by considering an asymmetric triple core photonic crystal fiber with a minor variation in one of the guiding core radii. Through the extinction ratio calculations, with suitable input signal combinations and control signal power, the half adder operation is demonstrated via logic outputs. The obtained results show the significant role of geometrical asymmetry indicated by the variation in the extinction ratios for the individual configurations. However, the half adder operation is found to be robust even in the presence of considerable geometrical asymmetry, with a significant figure of merit. Apart from this, a minor shift in the control signal phase is also observed between symmetric and asymmetric configurations for delivering logic gates based on the half adder function.
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