中国物理B ›› 2022, Vol. 31 ›› Issue (6): 64213-064213.doi: 10.1088/1674-1056/ac46c7

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Single-polarization single-mode hollow-core negative curvature fiber with nested U-type cladding elements

Qi-Wei Wang(王启伟)1, Shi Qiu(邱石)1, Jin-Hui Yuan(苑金辉)1,2,†, Gui-Yao Zhou(周桂耀)3, Chang-Ming Xia(夏长明)3, Yu-Wei Qu(屈玉玮)1, Xian Zhou(周娴)2, Bin-Bin Yan(颜玢玢)1, Qiang Wu(吴强)4,‡, Kui-Ru Wang(王葵如)1, Xin-Zhu Sang(桑新柱)1, and Chong-Xiu Yu(余重秀)1   

  1. 1 State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2 Research Center for Convergence Networks and Ubiquitous Services, University of Science&Technology Beijing, Beijing 100083, China;
    3 Guangzhou Key Laboratory for Special Fiber Photonic Devices, South China Normal University, Guangzhou 510006, China;
    4 Department of Physics and Electrical Engineering, Northumbria University, Newcastle upon Tyne, NE1;
    8 ST, United Kingdom
  • 收稿日期:2021-11-01 修回日期:2021-12-22 接受日期:2021-12-29 出版日期:2022-05-17 发布日期:2022-05-26
  • 通讯作者: Jin-Hui Yuan, Qiang Wu E-mail:yuanjinhui81@bupt.edu.cn;qiang.wu@northumbria.ac.uk
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61935007).

Single-polarization single-mode hollow-core negative curvature fiber with nested U-type cladding elements

Qi-Wei Wang(王启伟)1, Shi Qiu(邱石)1, Jin-Hui Yuan(苑金辉)1,2,†, Gui-Yao Zhou(周桂耀)3, Chang-Ming Xia(夏长明)3, Yu-Wei Qu(屈玉玮)1, Xian Zhou(周娴)2, Bin-Bin Yan(颜玢玢)1, Qiang Wu(吴强)4,‡, Kui-Ru Wang(王葵如)1, Xin-Zhu Sang(桑新柱)1, and Chong-Xiu Yu(余重秀)1   

  1. 1 State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2 Research Center for Convergence Networks and Ubiquitous Services, University of Science&Technology Beijing, Beijing 100083, China;
    3 Guangzhou Key Laboratory for Special Fiber Photonic Devices, South China Normal University, Guangzhou 510006, China;
    4 Department of Physics and Electrical Engineering, Northumbria University, Newcastle upon Tyne, NE1;
    8 ST, United Kingdom
  • Received:2021-11-01 Revised:2021-12-22 Accepted:2021-12-29 Online:2022-05-17 Published:2022-05-26
  • Contact: Jin-Hui Yuan, Qiang Wu E-mail:yuanjinhui81@bupt.edu.cn;qiang.wu@northumbria.ac.uk
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61935007).

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摘要： Hollow-core negative curvature fibers (HC-NCFs) have become one of the research hotspots in the field of optical fiber because of their potential applications in the data and energy transmissions. In this work, a new kind of single-polarization single-mode HC-NCF with nested U-type cladding elements is proposed. To achieve the single-polarization single-mode transmission, we use two different silica tubes in thickness, which satisfy the resonance and anti-resonance conditions on the U-type cladding elements and the cladding tubes, respectively. Besides, the elliptical elements are introduced to achieve good single-mode performance. By studying the influences of the structure parameters on the propagation characteristics, the optimized structure parameters are obtained. The simulation results show that when the wavelength is fixed at 1550 nm, the single-polarization single-mode transmission is achieved, with the polarization extinction ratio of 25749 and minimum high-order mode extinction ratio of 174. Furthermore, the confinement loss is only 0.0015 dB/m.

关键词: hollow-core negative curvature fiber, single-polarization, single-mode, finite element method

Abstract: Hollow-core negative curvature fibers (HC-NCFs) have become one of the research hotspots in the field of optical fiber because of their potential applications in the data and energy transmissions. In this work, a new kind of single-polarization single-mode HC-NCF with nested U-type cladding elements is proposed. To achieve the single-polarization single-mode transmission, we use two different silica tubes in thickness, which satisfy the resonance and anti-resonance conditions on the U-type cladding elements and the cladding tubes, respectively. Besides, the elliptical elements are introduced to achieve good single-mode performance. By studying the influences of the structure parameters on the propagation characteristics, the optimized structure parameters are obtained. The simulation results show that when the wavelength is fixed at 1550 nm, the single-polarization single-mode transmission is achieved, with the polarization extinction ratio of 25749 and minimum high-order mode extinction ratio of 174. Furthermore, the confinement loss is only 0.0015 dB/m.

Key words: hollow-core negative curvature fiber, single-polarization, single-mode, finite element method

中图分类号:  (Birefringence, polarization)

  • 42.81.Gs
42.68.Ay (Propagation, transmission, attenuation, and radiative transfer) 42.25.Bs (Wave propagation, transmission and absorption) 42.81.-i (Fiber optics)