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Design and analysis of trench-assisted large-mode-field-area multi-core fiber with air-hole

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Abstract

In this paper, a trench-assisted large-mode-field-area multi-core fiber with an air-hole structure composed of 21 conventional fiber cores and 16 air holes is proposed, and it can realize dual-mode transmission. By adjusting the structural parameters, the effective mode field area of fundamental mode can be up to 1916.042 µm2 at 1550 nm. In addition, the fiber has good bending characteristics by adding a trench with a lower refractive index than the cladding. When the bending radius is 1.4 cm, the bending loss is low to 2.96 × 10–3 dB/m. This fiber is of great significance for the design of bending insensitive fiber.

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Acknowledgement

The authors wish to thank the anonymous reviewers for their valuable suggestions. This work is supported by National Natural Science Foundation of China (NFSC) (Grant No. 61905062), Natural Science Foundation of Hebei province (Grant No. F2019202294). We also thank the support from Key Laboratory of all Optical Network and Advanced Telecommunication Network, Ministry of Education (Beijing Jiaotong University) (Grant No. AON2019005).

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Authors and Affiliations

  1. Center for Advanced Laser Technology, School of Electronics and Information Engineering, Hebei University of Technology, Tianjin, 300401, China

    Yuqin Zhang, Yudong Lian, Yuhe Wang, Jingbo Wang & Mengxin Yang

  2. Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, Tianjin, 300401, China

    Yuqin Zhang, Yudong Lian, Yuhe Wang, Jingbo Wang, Mengxin Yang & Nannan Luan

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  1. Yuqin Zhang
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  2. Yudong Lian
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Correspondence to Yudong Lian.

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Zhang, Y., Lian, Y., Wang, Y. et al. Design and analysis of trench-assisted large-mode-field-area multi-core fiber with air-hole. Appl. Phys. B 127, 6 (2021). https://doi.org/10.1007/s00340-020-07557-7

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