Design and research of dual hollow-core anti-resonant fiber polarization beam splitter operating at 1550-nm wavelength band

IF 1.5 4区物理与天体物理 Q3 OPTICS

The European Physical Journal D Pub Date : 2026-05-09 DOI:10.1140/epjd/s10053-026-01143-w

Xue-ying Tu, Jian-she Li, Jing-qiong Zhang, Shu-guang Li

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Abstract

This paper proposes a dual hollow-core anti-resonant fiber polarizing beam splitter based on a composite structure of nested tubes and cladding tubes. Two circular cladding tubes and one circular nested tube are, respectively, introduced along the inner wall of the outer support tube on both sides of the x-axis, thereby dividing the fiber core into two symmetrically distributed cores, A and B. The air gap between them serves as the channel for dual-core mode coupling. By studying the influence of structural parameters and other factors on the performance of the beam-splitting device, the optimal device structure parameters are determined. When the device length is 5.46 cm, the Polarization Extinction Ratio is less than − 20 dB in the wavelength range of 1.54–2 μm, and polarization extinction ratios of − 48.1 dB and − 77.0 dB are achieved at 1.59 μm and 1.90 μm, respectively, covering a bandwidth of 460 nm. In the wavelength range of 1.4–1.82 μm, the extinction ratio of higher-order modes is greater than 100. This research has significant theoretical value and practical engineering significance for the construction of a complete communication fiber system transmission system.

Graphical abstract

The alternative text for this image may have been generated using AI.

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工作于1550nm波段的双空心芯抗谐振光纤偏振分束器的设计与研究

提出了一种基于嵌套管和包层管复合结构的双空心抗谐振光纤偏振分束器。在x轴两侧的外支撑管内壁上分别引入两个圆形包层管和一个圆形嵌套管，从而将光纤芯划分为对称分布的A、b两个芯，它们之间的气隙作为双芯模式耦合的通道。通过研究结构参数等因素对分束器件性能的影响，确定了最优的器件结构参数。当器件长度为5.46 cm时，在1.54 ~ 2 μm波长范围内偏振消光比小于−20 dB，在1.59 μm和1.90 μm波长范围内偏振消光比分别为−48.1 dB和−77.0 dB，覆盖460 nm带宽。在1.4 ~ 1.82 μm波长范围内，高阶模的消光比大于100。本研究对构建完整的通信光纤传输系统具有重要的理论价值和实际工程意义。图形抽象此图像的替代文本可能是使用AI生成的。

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来源期刊

The European Physical Journal D 物理-物理：原子、分子和化学物理

CiteScore

3.10

自引率

11.10%

发文量

213

审稿时长

3 months

期刊介绍： The European Physical Journal D (EPJ D) presents new and original research results in: Atomic Physics; Molecular Physics and Chemical Physics; Atomic and Molecular Collisions; Clusters and Nanostructures; Plasma Physics; Laser Cooling and Quantum Gas; Nonlinear Dynamics; Optical Physics; Quantum Optics and Quantum Information; Ultraintense and Ultrashort Laser Fields. The range of topics covered in these areas is extensive, from Molecular Interaction and Reactivity to Spectroscopy and Thermodynamics of Clusters, from Atomic Optics to Bose-Einstein Condensation to Femtochemistry.