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Design of a mid-infrared ultra-broadband chalcogenide Ge20Sb15Se65 -based single-polarization single-mode photonic crystal fiber with large nonlinearity

SOLIMAN, Abdel-Hamid, Hui, Zhanqiang, Wang, Xiaotong, Zhang, Youkun, Gong, Jiamin and Zhou, Hua (2019) Design of a mid-infrared ultra-broadband chalcogenide Ge20Sb15Se65 -based single-polarization single-mode photonic crystal fiber with large nonlinearity. Optik, 184. pp. 50-62. ISSN 00304026

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Abstract or description

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 2μm-7μm 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 Λ=2.6μm, D=2.4μm, d=1.2μm, D1=2.2μm, and d1=0.4μm, the proposed PCF is a low-loss SPSM-PCF within the wavelengths ranging from 4.0338μm to 7μm, where only the x-polarization mode exists with the highest nonlinearity coefficient of 1468 w-1km-1 (at 4.0338μm). It will become an outstanding candidate for mid-IR optical fiber sensing/detection/ imaging/monitoring and nonlinear fiber optics.

Item Type: Article
Faculty: Previous Faculty of Computing, Engineering and Sciences > Engineering
Depositing User: Abdel-Hamid SOLIMAN
Date Deposited: 06 Jun 2019 12:41
Last Modified: 06 Jun 2019 12:41
URI: http://eprints.staffs.ac.uk/id/eprint/5694

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