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  9. Optical Fibre Communication Systems And Technologies
  11. Circular Polarization Beam Splitter Based On Helically Twisted Dual Hollow-core Anti-resonant Fiber.
  1. Home
  3. Research Domains
  5. Engineering
  7. Communications Engineering
  9. Optical Fibre Communication Systems And Technologies
  11. Circular Polarization Beam Splitter Based On Helically Twisted Dual Hollow-core Anti-resonant Fiber.

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Circular polarization beam splitter based on helically twisted dual hollow-core anti-resonant fiber.

Xiaolin Chen, Zhaoan Li, Shurui Tian

    Optics Express
    |June 14, 2025

    View abstract on PubMed

    Summary
    This summary is machine-generated.

    We developed a novel circular polarization beam splitter using helically twisted dual hollow-core anti-resonant fiber. This device effectively separates circularly polarized light, advancing optical information processing and communication technologies.

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    Area of Science:

    • Optics and Photonics
    • Fiber Optics
    • Light Manipulation

    Background:

    • Hollow-core anti-resonant fibers are increasingly important for manipulating light's spin and orbital angular momentum.
    • Space-division multiplexing technologies drive the need for advanced optical components.

    Purpose of the Study:

    • To propose and design a circular polarization beam splitter (CPBS) utilizing helically twisted dual hollow-core anti-resonant fiber (TDHC-ARF).
    • To investigate the performance and capabilities of the designed CPBS for optical information processing.

    Main Methods:

    • Utilized the finite-element method combined with transformation optics to analyze coupling characteristics of circularly polarized eigenmodes in TDHC-ARF.
    • Developed a 3D simulation code based on the full-vector finite-element beam propagation method for helicoidal waveguides to verify performance.

    Main Results:

    • The designed CPBS operates over a 68 nm bandwidth (1.412–1.48 μm) with a length of 17.47 cm.
    • Achieved a polarization extinction ratio > 20 dB and a higher-order mode extinction ratio > 100.
    • Demonstrated spatial separation of orthogonally circularly polarized components from a linearly polarized Gaussian beam incident into one core.

    Conclusions:

    • The developed CPBS effectively separates circularly polarized light in different cores of the TDHC-ARF.
    • This work enables the design of all-fiber optical devices based on hollow-core anti-resonant fibers.
    • Opens new avenues for applications in optical information processing and communication.