Abstract In this article, a new quasi photonic crystal fiber (PCF) with chalcogenide ellipse core has been proposed. Fundamental optical transmission characteristics such as effective area, confinement loss, numerical aperture (NA), nonlinearity and power fraction has been investigated through the full vector finite element method (FV-FEM). The proposed model shows ultra low confinement loss of 2.08 × 10−5 dB/m, significant NA of 1.2 × 10−8 dB/km and effective area of 1.42 × 10–12m2 in x-polarization mode. This shows a high nonlinearity of 4.72 × 104 W−1km−1. This raised model may play a vital role to sensing, biomedical imaging, fluorescence monitoring and optical signal processing and nonlinear applications.

中文翻译：

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用于非线性光学应用的硫族化物嵌入准光子晶体光纤

摘要 本文提出了一种新型的具有硫属化物椭圆纤芯的准光子晶体光纤（PCF）。已经通过全矢量有限元方法 (FV-FEM) 研究了基本光传输特性，例如有效面积、限制损耗、数值孔径 (NA)、非线性和功率分数。所提出的模型在 x 极化模式下显示出 2.08 × 10−5 dB/m 的超低限制损耗、1.2 × 10−8 dB/km 的显着 NA 和 1.42 × 10–12m2 的有效面积。这显示了 4.72 × 104 W−1km−1 的高非线性。这种凸起的模型可能在传感、生物医学成像、荧光监测和光信号处理以及非线性应用中发挥重要作用。