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<p>In this paper, a dual hollow-core anti-resonant fiber polarization beam splitter (DHC-ARF PBS) with ultra-wide splitting bandwidth is proposed. The effects of the structure parameters of the DHC-ARF PBS on the splitting performances, including the coupling length, coupling length ratio, confinement loss, and higher-order mode extinction ratio (<i>HOMER</i>), are investigated using the finite element method. The simulation results show that under the optimal structure parameters, the proposed DHC-ARF PBS has larger <i>HOMER</i> (&gt; 100) within the working wavelength range, indicating its good single-mode transmission characteristics. Moreover, the proposed DHC-ARF PBS has a short splitting length of 2.07&#xa0;cm and an ultra-wide splitting bandwidth of 610&#xa0;nm (1320 ~ 1930&#xa0;nm), which covers the whole E, S, C, L, and U bands and a portion of O band. It is believed that the proposed DHC-ARF PBS will have significant applications in the optical communication and sensing systems.</p>

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Design of dual hollow-core anti-resonant fiber polarization beam splitter covering the O + E + S + C + L + U band

  • 期刊论文

  • 发表日期：

    2025年9月16日

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  • Guoqing Zhou,
  • Yuwei Qu,
  • Jinhui Yuan,
  • Jingao Zhang,
  • Guiyao Zhou,
  • Changming Xia,
  • Binbin Yan,
  • Kuiru Wang,
  • Xinzhu Sang,
  • Chongxiu Yu

摘要

In this paper, a dual hollow-core anti-resonant fiber polarization beam splitter (DHC-ARF PBS) with ultra-wide splitting bandwidth is proposed. The effects of the structure parameters of the DHC-ARF PBS on the splitting performances, including the coupling length, coupling length ratio, confinement loss, and higher-order mode extinction ratio (HOMER), are investigated using the finite element method. The simulation results show that under the optimal structure parameters, the proposed DHC-ARF PBS has larger HOMER (> 100) within the working wavelength range, indicating its good single-mode transmission characteristics. Moreover, the proposed DHC-ARF PBS has a short splitting length of 2.07 cm and an ultra-wide splitting bandwidth of 610 nm (1320 ~ 1930 nm), which covers the whole E, S, C, L, and U bands and a portion of O band. It is believed that the proposed DHC-ARF PBS will have significant applications in the optical communication and sensing systems.