首页> 外文期刊>Optik: Zeitschrift fur Licht- und Elektronenoptik: = Journal for Light-and Electronoptic >Design of a mid-infrared ultra-broadband chalcogenide Ge20Sb15Se65 -based single-polarization single-mode photonic crystal fiber with large nonlinearity
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Design of a mid-infrared ultra-broadband chalcogenide Ge20Sb15Se65 -based single-polarization single-mode photonic crystal fiber with large nonlinearity

机译:模拟中红外超宽带硫属化合物GE20SB15SE65的单极化单模光子晶纤维设计,具有大非线性

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摘要

This paper proposes a mid-infrared (mid-IR) Ge20Sb15Se65-based photonic crystal fiber (PCF) with hexagonally latticed dual-rhombic air holes to deliver single-polarization single-mode (SPSM) over a broad waveband. The properties of SPSM bandwidth, confinement loss, birefringence, effective mode area and nonlinear coefficient are investigated in 2 mu m-7 mu m region by utilizing the finite difference time domain method (FDTD) together with anisotropic perfectly matched layer (PML). The results reveal that for the optimized geometric parameters of Lambda = 2.6 mu m, D = 2.4 mu m, d = 1.2 mu m, D-1 = 2.2 mu m, and d(1) = 0.4 mu m, the proposed PCF is a low-loss SPSM-PCF within the wavelengths ranging from 4.0338 mu m to 7 mu m, where only the x-polarization mode exists with the highest nonlinearity coefficient of 1468 w(-1) km(-1) (at 4.0338 mu m). It will become an outstanding candidate for mid-IR optical fiber sensing/detection/ imaging/monitoring and nonlinear fiber optics.
机译:本文提出了一种基于中红外(中IR)GE20SB15SE65的光子晶体纤维(PCF),其具有六角形双菱形空洞,以在宽波段上输送单极化单模(SPSM)。 通过利用有限差差时域法(FDTD)与各向异性完全匹配的层(PML)一起研究SPSM带宽,限制损失,双折射,有效模式和非线性系数的性质。 结果表明,对于Lambda =2.6μm,d =2.4μm,d =1.2μm,d-1 =2.2μm,d(1)= 0.4 mu m,所提出的pcf是的优化几何参数 波长内的低损耗SPSM-PCF从4.0338 mu m〜7 mu m,其中只有x偏振模式的最高非线性系数为1468 w(-1)km(-1)(在4.0338 mu m )。 它将成为中红外光纤感测/检测/成像/监测和非线性光纤的优秀候选者。

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