Laser Journal, Volume. 45, Issue 11, 156(2024)

Photonic crystal fiber design with low flat dispersion, large mode field area, and support for 118 OAM modes

YAN Yupeng... SONG Xice, GUAN Lizhen, WANG Yuhang, PU Junyu, SUN Hongsen, LI Changjiang, LIU Kai and YU Xianlun* |Show fewer author(s)
Author Affiliations
  • School of Electronic and information Engineering, Chongqing Three Gorges University, Chongqing 404100, China
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    In order to improve the transmission characteristics of fiber-optic communication, a new air-hole arrangement structure ring photonic crystal fiber is designed, which has a large-diameter air-hole as the core, and the cladding is made of SiO2 as the base material, containing three layers of air-holes in the form of a rectangular, circular, and ring-cut-sector polygon. The transmission characteristics of photon orbital angular momentum modes in the designed fiber are analyzed based on the finite element method. The results show that the stable transmission of 118 OAM modes can be achieved in the high refractive index ring around the fiber core in the C+L band without the existence of radial higher-order modes, the maximum effective mode field area are 305.3 μm2, which obtained in 1.63 μm, which effectively increases its communication capacity, and the minimum effective refractive index difference between its neighboring vectorial modes is 5.43×10-3, the maximum confinement loss is 1.06×10-8 dB/m, the minimum nonlinear coefficient is 0.285 w-1 ·km-1, and the minimum dispersion of the vectorial modes is 2.68 ps/(km·nm), and the quality of intrinsic modes are all between 95.56%~98.37%, which could increase the quality of communication. This photonic crystal fiber can be applied to mode division multiplexing system, which provides a reference for improving the communication transmission efficiency.

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    YAN Yupeng, SONG Xice, GUAN Lizhen, WANG Yuhang, PU Junyu, SUN Hongsen, LI Changjiang, LIU Kai, YU Xianlun. Photonic crystal fiber design with low flat dispersion, large mode field area, and support for 118 OAM modes[J]. Laser Journal, 2024, 45(11): 156

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    Paper Information

    Category:

    Received: Dec. 22, 2023

    Accepted: Jan. 17, 2025

    Published Online: Jan. 17, 2025

    The Author Email: Xianlun YU (839811547@qq.com)

    DOI:10.14016/j.cnki.jgzz.2024.11.156

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