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<p>This paper puts forth a proposal for the development of a hollow-core anti-resonant fiber (HC- ARF) with a lantern-shaped cladding structure. An elliptical core is employed to introduce high birefringence, and an optimized multi-layer curved structure design is utilized to achieve a robust anti-resonant (AR) effect. A confinement loss (CL) of less than 0.1 dB/km can be achieved over a bandwidth of 200&#xa0;nm, or less than 1 dB/km over a bandwidth of 580&#xa0;nm, while maintaining a birefringence of approximately 10<sup>− 4</sup>. The structure is center-symmetric, and the cladding exhibits minimal bending deformation, rendering it largely insensitive to bending. The structure is capable of achieving a CL of less than 0.1 dB/km with a bending radius of 4&#xa0;cm, while exhibiting excellent bending resistance. The structure’s excellent performance and unique design concepts indicate broad prospective applications in nonlinear optics, fiber sensing, and signal transmission. Additionally, it offers a novel direction for subsequent polarization-maintaining HC-ARF design.</p>

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Lantern-shaped hollow-core anti-resonant fiber with high birefringence

  • 期刊论文

  • 发表日期：

    2025年11月3日

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  • Guomao Zheng,
  • Weiqian Shi,
  • Yilin Huang,
  • Hongxiang Xu,
  • Changming Xia,
  • Jiantao Liu,
  • Zhiyun Hou,
  • Guiyao Zhou

摘要

This paper puts forth a proposal for the development of a hollow-core anti-resonant fiber (HC- ARF) with a lantern-shaped cladding structure. An elliptical core is employed to introduce high birefringence, and an optimized multi-layer curved structure design is utilized to achieve a robust anti-resonant (AR) effect. A confinement loss (CL) of less than 0.1 dB/km can be achieved over a bandwidth of 200 nm, or less than 1 dB/km over a bandwidth of 580 nm, while maintaining a birefringence of approximately 10− 4. The structure is center-symmetric, and the cladding exhibits minimal bending deformation, rendering it largely insensitive to bending. The structure is capable of achieving a CL of less than 0.1 dB/km with a bending radius of 4 cm, while exhibiting excellent bending resistance. The structure’s excellent performance and unique design concepts indicate broad prospective applications in nonlinear optics, fiber sensing, and signal transmission. Additionally, it offers a novel direction for subsequent polarization-maintaining HC-ARF design.