Design of a nested photonic crystal fiber supporting 76 + 36 OAM modes for fiber communication

This study introduces a distinctive entwined photonic crystal fiber (PCF) featuring two distinct and independent directed mode sections, collectively supporting a total of 112 orbital angular momentum (OAM) modes, comprising 76 + 36 modes. The confinement loss (CL) ranges approximately between 2.497...

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Bibliographic Details
Published in:Journal of computational electronics 2025-02, Vol.24 (1), p.13
Main Authors: Ansary, Khalequzzaman, Hassan, Md. Mehedi, Ali, Mohammed Nadir Bin, Israfil, FNU, Mollah, Mohammad Sarwar Hossain, Bhuiyan, Abdullah Bin Kasem, Paul, Bikash Kumar
Format: Article
Language:English
Subjects:
Angular momentum
Communication
Crystal fibers
Data transmission
Design
Electric fields
Electrical Engineering
Engineering
Finite element analysis
Finite element method
Mathematical and Computational Engineering
Mathematical and Computational Physics
Mechanical Engineering
Optical and Electronic Materials
Optical properties
Optics
Perfectly matched layers
Photonic crystals
Propagation
Theoretical
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Summary:This study introduces a distinctive entwined photonic crystal fiber (PCF) featuring two distinct and independent directed mode sections, collectively supporting a total of 112 orbital angular momentum (OAM) modes, comprising 76 + 36 modes. The confinement loss (CL) ranges approximately between 2.49701 × 1 0 - 11 and 9.13425 × 1 0 - 9 dB / m , while highest attained OAM purity is 99.31969 % and 98.99258 % at H E 2 , 1 mode, respectively, for both inner and outer rings. All the modes demonstrate ERIDs exceeding 1 0 - 4 , and minimum dispersion variation observed is - 856 ps / km - nm . Additionally, we achieved an outstanding isolation performance with the highest attained ISO reaching 294 dB at HE 9 , 1 mode and observed a substantial effective mode area of 9.15 μm 2 and 25.8μm 2 , respectively, for inner and outer rings. This research leverages COMSOL Multiphysics' finite element method (FEM) and perfectly matched layer (PML) capabilities alongside MATLAB processing to calculate all key properties of the proposed fiber. Therefore, the suggested PCF demonstrates promising prospects for extended-range, high-capacity data transmission within optical communications and applications related to OAM sensing.
ISSN:1569-8025
1572-8137
DOI:10.1007/s10825-024-02257-3