Design of 2 μm Low-Loss Hollow-Core Anti-Resonant Fibers

Tianran Sun; Xinyang Su; Fanchao Meng; Zaining Wang; Jiale Song; Chenglong Zhang; Tianjia Xu; Yunhong Zhang; Huaiwei Zhang; Mengdi Cui; Yi Zheng

doi:10.3390/mi14061198

Design of 2 μm Low-Loss Hollow-Core Anti-Resonant Fibers

Micromachines (Basel). 2023 Jun 5;14(6):1198. doi: 10.3390/mi14061198.

Authors

Tianran Sun^{1

2}, Xinyang Su^{1

2}, Fanchao Meng^{1

2}, Zaining Wang¹, Jiale Song¹, Chenglong Zhang¹, Tianjia Xu³, Yunhong Zhang^{1

2}, Huaiwei Zhang^{1

2}, Mengdi Cui^{1

2}, Yi Zheng^{1

2}

Affiliations

¹ School of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China.
² Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China.
³ School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China.

Abstract

We systematically studied several of the most traditional hollow-core anti-resonant fiber (HC-ARF) structures, with the aim of achieving low confinement loss, single-mode performance, and high insensitivity to bending in the 2 µm band. Moreover, the propagation loss of fundamental mode (FM), higher-order mode (HOMs), and the higher-order mode extinction ratio (HOMER) under different geometric parameters were studied. Analysis showed that the confinement loss of the six-tube nodeless hollow-core anti-resonant fiber at 2 µm was 0.042 dB/km, and its higher-order mode extinction ratio was higher than 9000. At the same time, a confinement loss of 0.040 dB/km at 2 µm was achieved in the five-tube nodeless hollow-core anti-resonant fiber, and its higher-order mode extinction ratio was higher than 2700.

Keywords: anti-resonant fiber (ARF); confinement loss (CL); higher-order mode extinction ratio (HOMER).

Grants and funding

This research was funded by National Natural Science Foundation of China (61735005, 61935010, 12275017); Natural Science Foundation of Beijing Municipality (4182054, 4212052); Fundamental Research Funds for the Central Universities (2021RC206, 2022YJS128); High-end Foreign Expert Introduction Program (G2022104010L).